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Issue setting up Forge Modloader

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Posted September 24, 201213 yr

I've been trying to setup the recent Forge Modloader (4.1.1) so I can work on a mod for MC 1.3.2 (in MCP 7.2), but I've been running into an issue with my install. When I run the install.sh, it crashes in the execution of MCPMerger.

Various other details: I did this with appropriate, vanilla clients and server; and loaded everything into the appropriate folder. I am running this on a Mac OS X (10.6.8 ). Any help would be appreciated.

Full Logs are posted here:

> Running MCPMerger

Server -skip : aec 7 (<init> 0 []

Client -skip : aec <init> 7 (<init> 0 []

Server -skip : aec <init> 7 (<init> 0 []

Client *add* : aec <init> 7 (<init> 1 [<init>]

Client -skip : aec a 6 (<init> 1 [<init>]

Server *add* : aec a 6 (<init> 2 [<init>]

Server -skip : aec a 6 (d 7) 2 [<init>]

Client *add* : aec a 6 (d 7) 3 [a]

Client *add* : aec a 5 (d 7) 4 [a]

Client *add* : aec a 4 (d 7) 5 [a]

Client -skip : aec d 3 (d 7) 5 [a]

Server -skip : aec d 3 (d 7) 5 [a]

Client *add* : aec d 3 (d 7) 6 [d]

Client -skip : aec a 2 (d 7) 6 [d]

Server *add* : aec a 2 (d 7) 7 [d]

Server -skip : aec a 2 (c 6) 7 [d]

Client *add* : aec a 2 (c 6) 8 [a]

Client -skip : aec b 1 (c 6) 8 [a]

Server -skip : aec b 1 (c 6) 8 [a]

Client *add* : aec b 1 (c 6) 9

Server *add* : aec b 0 (c 6) 10

Server *add* : aec b 0 (e 5) 11

Server *add* : aec b 0 (a 4) 12

Server *add* : aec b 0 (a 3) 13

Server *add* : aec b 0 (b 2) 14

Server *add* : aec b 0 (a 1) 15

MethodWrapper{name=<init>, desc=()V, server=false, client=true}

MethodWrapper{name=<init>, desc=(Ljava/io/File;)V, server=true, client=false}

MethodWrapper{name=a, desc=(Lbh;)F, server=false, client=true}

MethodWrapper{name=a, desc=(Lbh;IF)Z, server=false, client=true}

MethodWrapper{name=a, desc=(Lbh;F)V, server=false, client=true}

MethodWrapper{name=d, desc=(Lwd;F)V, server=false, client=true}

MethodWrapper{name=d, desc=()V, server=true, client=false}

MethodWrapper{name=a, desc=(Lwd;)F, server=false, client=true}

MethodWrapper{name=b, desc=(Lwd;IF)Z, server=false, client=true}

MethodWrapper{name=c, desc=(Ljava/lang/String;)Laed;, server=true, client=false}

MethodWrapper{name=e, desc=(Ljava/lang/String;)V, server=true, client=false}

MethodWrapper{name=a, desc=([Ljava/io/File;)V, server=true, client=false}

MethodWrapper{name=a, desc=(Ljava/lang/String;Z)Laee;, server=true, client=false}

MethodWrapper{name=b, desc=(Ljava/lang/String;)Z, server=true, client=false}

MethodWrapper{name=a, desc=(Ljava/lang/String;Lim;)Z, server=true, client=false}

Server -skip : aeb 3 (<init> 17) 0 []

Client -skip : aeb <init> 3 (<init> 17) 0 []

Server -skip : aeb <init> 3 (<init> 17) 0 []

Client *add* : aeb <init> 3 (<init> 17) 1 [<init>]

Client -skip : aeb b 2 (<init> 17) 1 [<init>]

Server *add* : aeb b 2 (<init> 17) 2 [<init>]

Server -skip : aeb b 2 (h 16) 2 [<init>]

Client *add* : aeb b 2 (h 16) 3

Client -skip : aeb a 1 (h 16) 3

Server -skip : aeb a 1 (h 16) 3

Client *add* : aeb a 1 (h 16) 4 [a]

Server *add* : aeb a 0 (h 16) 5 [a]

Server *add* : aeb a 0 (b 15) 6 [a]

Server *add* : aeb a 0 (c 14) 7 [a]

Server *add* : aeb a 0 (a 13) 8 [a]

Server *add* : aeb a 0 (d 12) 9 [a]

Server *add* : aeb a 0 (a 11) 10 [a]

Server *add* : aeb a 0 (a 10) 11 [a]

Server *add* : aeb a 0 (a 9) 12 [a]

Server *add* : aeb a 0 (b 13 [a]

Server *add* : aeb a 0 (a 7) 14 [a]

Server *add* : aeb a 0 (e 6) 15 [a]

Server *add* : aeb a 0 (f 5) 16 [a]

Server *add* : aeb a 0 (a 4) 17 [a]

Server *add* : aeb a 0 (b 3) 18 [a]

Server *add* : aeb a 0 (g 2) 19 [a]

Server *add* : aeb a 0 (<clinit> 1) 20 [a]

MethodWrapper{name=<init>, desc=(Lsz;Lgl;Lgl;III)V, server=false, client=true}

MethodWrapper{name=<init>, desc=(Ljava/io/File;Ljava/lang/String;Z)V, server=true, client=false}

MethodWrapper{name=b, desc=(Lul;)Z, server=false, client=true}

MethodWrapper{name=a, desc=(Lul;)V, server=false, client=true}

MethodWrapper{name=h, desc=()V, server=true, client=false}

MethodWrapper{name=b, desc=()Ljava/io/File;, server=true, client=false}

MethodWrapper{name=c, desc=()V, server=true, client=false}

MethodWrapper{name=a, desc=(Lxc;)Lwq;, server=true, client=false}

MethodWrapper{name=d, desc=()Laed;, server=true, client=false}

MethodWrapper{name=a, desc=(Laed;Lan;)V, server=true, client=false}

MethodWrapper{name=a, desc=(Laed;)V, server=true, client=false}

MethodWrapper{name=a, desc=(Log;)V, server=true, client=false}

MethodWrapper{name=b, desc=(Log;)V, server=true, client=false}

MethodWrapper{name=a, desc=(Ljava/lang/String;)Lan;, server=true, client=false}

MethodWrapper{name=e, desc=()Laer;, server=true, client=false}

MethodWrapper{name=f, desc=()[Ljava/lang/String;, server=true, client=false}

MethodWrapper{name=a, desc=()V, server=true, client=false}

MethodWrapper{name=b, desc=(Ljava/lang/String;)Ljava/io/File;, server=true, client=false}

MethodWrapper{name=g, desc=()Ljava/lang/String;, server=true, client=false}

MethodWrapper{name=<clinit>, desc=()V, server=true, client=false}

Server -skip : aea 12 (<init> 32) 0 []

Client -skip : aea <init> 12 (<init> 32) 0 []

Server -skip : aea <init> 12 (<init> 32) 0 []

Client *add* : aea <init> 12 (<init> 32) 1 [<init>]

Client *add* : aea <init> 11 (<init> 32) 2 [<init>]

Client -skip : aea b 10 (<init> 32) 2 [<init>]

Server *add* : aea b 10 (<init> 32) 3 [<init>]

Server -skip : aea b 10 (a 31) 3 [<init>]

Client *add* : aea b 10 (a 31) 4

Client -skip : aea c 9 (a 31) 4

Server -skip : aea c 9 (a 31) 4

Client *add* : aea c 9 (a 31) 5 [c]

Client -skip : aea b 8 (a 31) 5 [c]

Server -skip : aea b 8 (a 31) 5 [c]

Client *add* : aea b 8 (a 31) 6

Client -skip : aea a 7 (a 31) 6

Server -skip : aea a 7 (a 31) 6

Client *add* : aea a 7 (a 31) 7 [a]

Client -skip : aea l 6 (a 31) 7 [a]

Server *add* : aea l 6 (a 31) 8 [a]

Server *add* : aea l 6 (a 30) 9 [a]

Server -skip : aea l 6 (b 29) 9 [a]

Client *add* : aea l 6 (b 29) 10 [l]

Client -skip : aea m 5 (b 29) 10 [l]

Server -skip : aea m 5 (b 29) 10 [l]

Client *add* : aea m 5 (b 29) 11 [m]

Client -skip : aea n 4 (b 29) 11 [m]

Server -skip : aea n 4 (b 29) 11 [m]

Client *add* : aea n 4 (b 29) 12 [n]

Client -skip : aea a 3 (b 29) 12 [n]

Server -skip : aea a 3 (b 29) 12 [n]

Client *add* : aea a 3 (b 29) 13 [a]

Client -skip : aea o 2 (b 29) 13 [a]

Server -skip : aea o 2 (b 29) 13 [a]

Client *add* : aea o 2 (b 29) 14 [o]

Client -skip : aea a 1 (b 29) 14 [o]

Server -skip : aea a 1 (b 29) 14 [o]

Client *add* : aea a 1 (b 29) 15 [a]

Server *add* : aea a 0 (b 29) 16 [a]

Server *add* : aea a 0 (c 28) 17 [a]

Server *add* : aea a 0 (d 27) 18 [a]

Server *add* : aea a 0 (e 26) 19 [a]

Server *add* : aea a 0 (f 25) 20 [a]

Server *add* : aea a 0 (h 24) 21 [a]

Server *add* : aea a 0 (i 23) 22 [a]

Server *add* : aea a 0 (j 22) 23 [a]

Server *add* : aea a 0 (k 21) 24 [a]

Server *add* : aea a 0 (m 20) 25 [a]

Server *add* : aea a 0 (n 19) 26 [a]

Server *add* : aea a 0 (o 18) 27 [a]

Server *add* : aea a 0 (p 17) 28 [a]

Server *add* : aea a 0 (q 16) 29 [a]

Server *add* : aea a 0 (b 15) 30 [a]

Server *add* : aea a 0 (a 14) 31 [a]

Server *add* : aea a 0 (a 13) 32 [a]

Server *add* : aea a 0 (e 12) 33 [a]

Server *add* : aea a 0 (a 11) 34 [a]

Server *add* : aea a 0 (f 10) 35 [a]

Server *add* : aea a 0 (b 9) 36 [a]

Server *add* : aea a 0 (g 37 [a]

Server *add* : aea a 0 (r 7) 38 [a]

Server *add* : aea a 0 (s 6) 39 [a]

Server *add* : aea a 0 (t 5) 40 [a]

Server *add* : aea a 0 (a 4) 41 [a]

Server *add* : aea a 0 (u 3) 42 [a]

Server *add* : aea a 0 (v 2) 43 [a]

Server *add* : aea a 0 (d 1) 44 [a]

MethodWrapper{name=<init>, desc=(IIFZ)V, server=false, client=true}

MethodWrapper{name=<init>, desc=(IIZ)V, server=false, client=true}

MethodWrapper{name=<init>, desc=(Laed;)V, server=true, client=false}

MethodWrapper{name=b, desc=(Lul;Lrv;Lsz;)Lul;, server=false, client=true}

MethodWrapper{name=c, desc=(Lul;)I, server=false, client=true}

MethodWrapper{name=b, desc=(Lul;)Lun;, server=false, client=true}

MethodWrapper{name=a, desc=(Lul;Lrv;Lsz;)Lul;, server=false, client=true}

MethodWrapper{name=a, desc=()Lan;, server=true, client=false}

MethodWrapper{name=a, desc=(Lan;)Lan;, server=true, client=false}

MethodWrapper{name=l, desc=()I, server=false, client=true}

MethodWrapper{name=m, desc=()F, server=false, client=true}

MethodWrapper{name=n, desc=()Z, server=false, client=true}

MethodWrapper{name=a, desc=(IIIF)Laea;, server=false, client=true}

MethodWrapper{name=o, desc=()Laea;, server=false, client=true}

MethodWrapper{name=a, desc=(Ljava/lang/String;)Lsv;, server=false, client=true}

MethodWrapper{name=b, desc=()J, server=true, client=false}

MethodWrapper{name=c, desc=()I, server=true, client=false}

MethodWrapper{name=d, desc=()I, server=true, client=false}

MethodWrapper{name=e, desc=()I, server=true, client=false}

MethodWrapper{name=f, desc=()J, server=true, client=false}

MethodWrapper{name=h, desc=()Lan;, server=true, client=false}

MethodWrapper{name=i, desc=()I, server=true, client=false}

MethodWrapper{name=j, desc=()Ljava/lang/String;, server=true, client=false}

MethodWrapper{name=k, desc=()I, server=true, client=false}

MethodWrapper{name=m, desc=()Z, server=true, client=false}

MethodWrapper{name=n, desc=()I, server=true, client=false}

MethodWrapper{name=o, desc=()Z, server=true, client=false}

MethodWrapper{name=p, desc=()I, server=true, client=false}

MethodWrapper{name=q, desc=()Luy;, server=true, client=false}

MethodWrapper{name=b, desc=(J)V, server=true, client=false}

MethodWrapper{name=a, desc=(III)V, server=true, client=false}

MethodWrapper{name=a, desc=(Ljava/lang/String;)V, server=true, client=false}

MethodWrapper{name=e, desc=(I)V, server=true, client=false}

MethodWrapper{name=a, desc=(Z)V, server=true, client=false}

MethodWrapper{name=f, desc=(I)V, server=true, client=false}

MethodWrapper{name=b, desc=(Z)V, server=true, client=false}

MethodWrapper{name=g, desc=(I)V, server=true, client=false}

MethodWrapper{name=r, desc=()Z, server=true, client=false}

MethodWrapper{name=s, desc=()Z, server=true, client=false}

MethodWrapper{name=t, desc=()Lva;, server=true, client=false}

MethodWrapper{name=a, desc=(Lva;)V, server=true, client=false}

MethodWrapper{name=u, desc=()Z, server=true, client=false}

MethodWrapper{name=v, desc=()Z, server=true, client=false}

MethodWrapper{name=d, desc=(Z)V, server=true, client=false}

Server -skip : adz 4 (<init> 2) 0 []

Client -skip : adz <init> 4 (<init> 2) 0 []

Server -skip : adz <init> 4 (<init> 2) 0 []

Client *add* : adz <init> 4 (<init> 2) 1 [<init>]

Client -skip : adz a 3 (<init> 2) 1 [<init>]

Server *add* : adz a 3 (<init> 2) 2 [<init>]

Server -skip : adz a 3 (accept 1) 2 [<init>]

Client *add* : adz a 3 (accept 1) 3 [a]

Client *add* : adz a 2 (accept 1) 4 [a]

Client *add* : adz a 1 (accept 1) 5 [a]

Server *add* : adz a 0 (accept 1) 6 [a]

MethodWrapper{name=<init>, desc=(ILjava/util/Random;Lmp;I)V, server=false, client=true}

MethodWrapper{name=<init>, desc=(Lady;)V, server=true, client=false}

MethodWrapper{name=a, desc=(Lfj;Ljava/util/List;Ljava/util/Random;)V, server=false, client=true}

MethodWrapper{name=a, desc=(Ljava/util/List;Ljava/util/Random;IIIII)Ladz;, server=false, client=true}

MethodWrapper{name=a, desc=(Lrv;Ljava/util/Random;Lmp;)Z, server=false, client=true}

MethodWrapper{name=accept, desc=(Ljava/io/File;Ljava/lang/String;)Z, server=true, client=false}

Server -skip : ady 2 (<init> 10) 0 []

Client -skip : ady <init> 2 (<init> 10) 0 []

Server -skip : ady <init> 2 (<init> 10) 0 []

Client *add* : ady <init> 2 (<init> 10) 1 [<init>]

Client -skip : ady toString 1 (<init> 10) 1 [<init>]

Server *add* : ady toString 1 (<init> 10) 2 [<init>]

Server -skip : ady toString 1 (c 9) 2 [<init>]

Client *add* : ady toString 1 (c 9) 3 [toString]

Server *add* : ady toString 0 (c 9) 4 [toString]

Server *add* : ady toString 0 (d 5 [toString]

Server *add* : ady toString 0 (a 7) 6 [toString]

Server *add* : ady toString 0 (b 6) 7 [toString]

Server *add* : ady toString 0 (a 5) 8 [toString]

Server *add* : ady toString 0 (f 4) 9 [toString]

Server *add* : ady toString 0 (a 3) 10 [toString]

Server *add* : ady toString 0 (a 2) 11 [toString]

Server *add* : ady toString 0 (a 1) 12 [toString]

MethodWrapper{name=<init>, desc=(Ljava/lang/String;)V, server=false, client=true}

MethodWrapper{name=<init>, desc=(Ljava/io/File;)V, server=true, client=false}

MethodWrapper{name=toString, desc=()Ljava/lang/String;, server=false, client=true}

MethodWrapper{name=c, desc=()I, server=true, client=false}

MethodWrapper{name=d, desc=()V, server=true, client=false}

MethodWrapper{name=a, desc=(Ljava/lang/String;Z)Laee;, server=true, client=false}

MethodWrapper{name=b, desc=(Ljava/lang/String;)Z, server=true, client=false}

MethodWrapper{name=a, desc=(Ljava/lang/String;Lim;)Z, server=true, client=false}

MethodWrapper{name=f, desc=(Ljava/lang/String;)V, server=true, client=false}

MethodWrapper{name=a, desc=(Ljava/io/File;Ljava/lang/Iterable;Lvp;IILim;)V, server=true, client=false}

MethodWrapper{name=a, desc=(Ljava/io/File;Ljava/io/File;Lvp;IILim;)V, server=true, client=false}

MethodWrapper{name=a, desc=(Ljava/io/File;Ljava/util/Collection;)V, server=true, client=false}

Server -skip : adx 11 (<init> 4) 0 []

Client -skip : adx <init> 11 (<init> 4) 0 []

Server -skip : adx <init> 11 (<init> 4) 0 []

Client *add* : adx <init> 11 (<init> 4) 1 [<init>]

Client -skip : adx a 10 (<init> 4) 1 [<init>]

Server *add* : adx a 10 (<init> 4) 2 [<init>]

Server -skip : adx a 10 (a 3) 2 [<init>]

Client *add* : adx a 10 (a 3) 3 [a]

Client *add* : adx a 9 (a 3) 4 [a]

Client *add* : adx a 8 (a 3) 5 [a]

Client *add* : adx a 7 (a 3) 6 [a]

Client *add* : adx a 6 (a 3) 7 [a]

Client *add* : adx a 5 (a 3) 8 [a]

Client -skip : adx b 4 (a 3) 8 [a]

Server *add* : adx b 4 (a 3) 9 [a]

Server *add* : adx b 4 (a 2) 10 [a]

Server *add* : adx b 4 (a 1) 11 [a]

Client *add* : adx b 4 (a 0) 12

Client *add* : adx b 3 (a 0) 13

Client *add* : adx a 2 (a 0) 14

Client *add* : adx <clinit> 1 (a 0) 15 [a]

MethodWrapper{name=<init>, desc=(IZ)V, server=false, client=true}

MethodWrapper{name=<init>, desc=(Ljava/io/File;Ljava/lang/String;Z)V, server=true, client=false}

MethodWrapper{name=a, desc=(II)I, server=false, client=true}

MethodWrapper{name=a, desc=(I)I, server=false, client=true}

MethodWrapper{name=a, desc=()Z, server=false, client=true}

MethodWrapper{name=a, desc=(Lrv;III)V, server=false, client=true}

MethodWrapper{name=a, desc=(ILjava/util/Random;)I, server=false, client=true}

MethodWrapper{name=a, desc=(Ljava/util/Random;)I, server=false, client=true}

MethodWrapper{name=a, desc=(Lxc;)Lwq;, server=true, client=false}

MethodWrapper{name=a, desc=(Laed;Lan;)V, server=true, client=false}

MethodWrapper{name=a, desc=()V, server=true, client=false}

MethodWrapper{name=b, desc=(I)I, server=false, client=true}

MethodWrapper{name=b, desc=()Z, server=false, client=true}

MethodWrapper{name=a, desc=(Ladg;IIII)Z, server=false, client=true}

MethodWrapper{name=<clinit>, desc=()V, server=false, client=true}

Server -skip : adw 6 (<init> 6) 0 []

Client -skip : adw <init> 6 (<init> 6) 0 []

Server -skip : adw <init> 6 (<init> 6) 0 []

Client *add* : adw <init> 6 (<init> 6) 1 [<init>]

Client *add* : adw <init> 5 (<init> 6) 2 [<init>]

Client -skip : adw a 4 (<init> 6) 2 [<init>]

eq: MethodWrapper{name=<init>, desc=(Ljava/lang/String;)V, server=true, client=true} MethodWrapper{name=<init>, desc=(Ljava/lang/String;)V, server=true, client=true}

Server *add* : adw a 4 (<init> 6) 2 [<init>]

Server -skip : adw a 4 (a 5) 2 [<init>]

Client *add* : adw a 4 (a 5) 3 [a]

Client *add* : adw a 3 (a 5) 4 [a]

Client *add* : adw a 2 (a 5) 5 [a]

Client *add* : adw a 1 (a 5) 6 [a]

Server *add* : adw a 0 (a 5) 7 [a]

Server *add* : adw a 0 (b 4) 8 [a]

Server *add* : adw a 0 (a 3) 9 [a]

Server *add* : adw a 0 (a 2) 10 [a]

Server *add* : adw a 0 (b 1) 11 [a]

MethodWrapper{name=<init>, desc=()V, server=false, client=true}

MethodWrapper{name=<init>, desc=(Ljava/lang/String;)V, server=true, client=true}

MethodWrapper{name=a, desc=(Ljava/io/DataInputStream;)V, server=false, client=true}

MethodWrapper{name=a, desc=(Ljava/io/DataOutputStream;)V, server=false, client=true}

MethodWrapper{name=a, desc=(Lkx;)V, server=false, client=true}

MethodWrapper{name=a, desc=()I, server=false, client=true}

MethodWrapper{name=a, desc=(Lan;)V, server=true, client=false}

MethodWrapper{name=b, desc=(Lan;)V, server=true, client=false}

MethodWrapper{name=a, desc=()V, server=true, client=false}

MethodWrapper{name=a, desc=(Z)V, server=true, client=false}

MethodWrapper{name=b, desc=()Z, server=true, client=false}

Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 4, Size: 3

at java.util.ArrayList.add(ArrayList.java:367)

at cpw.mods.fml.common.asm.transformers.MCPMerger.processFields(MCPMerger.java:468)

at cpw.mods.fml.common.asm.transformers.MCPMerger.processClass(MCPMerger.java:384)

at cpw.mods.fml.common.asm.transformers.MCPMerger.processJar(MCPMerger.java:217)

at cpw.mods.fml.common.asm.transformers.MCPMerger.main(MCPMerger.java:107)

Decompile Exception: 1

[\spoiler]

September 24, 201213 yr

Seems to me like you don't have a clean jar.

I do Forge for free, however the servers to run it arn't free, so anything is appreciated.
Consider supporting the team on Patreon

September 25, 201213 yr

Author

I had checked that. To double check, I even made my game vanilla again and recopied all the data. For some reason, it comes up with the same errors and thinks my client has been modified.

September 25, 201213 yr

Because your client has been modified

There is no other way around it.

Delete your entire minecraft/mcp folder and try again.

I do Forge for free, however the servers to run it arn't free, so anything is appreciated.
Consider supporting the team on Patreon

September 25, 201213 yr

Lex:

Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 4, Size: 3

at java.util.ArrayList.add(ArrayList.java:367)

at cpw.mods.fml.common.asm.transformers.MCPMerger.processFields(MCPMerger.java:468)

at cpw.mods.fml.common.asm.transformers.MCPMerger.processClass(MCPMerger.java:384)

at cpw.mods.fml.common.asm.transformers.MCPMerger.processJar(MCPMerger.java:217)

at cpw.mods.fml.common.asm.transformers.MCPMerger.main(MCPMerger.java:107)

Seems like a MCPMerger issue to me.

Read the EAQ before posting! OR ELSE!

This isn't building better software, its trying to grab a place in the commit list of a highly visible github project.

www.forgeessentials.com

Don't PM me, I don't check this account unless I have to.

September 25, 201213 yr

Thats caused by your jar being modified, quit having a modified jar.

I do Forge for free, however the servers to run it arn't free, so anything is appreciated.
Consider supporting the team on Patreon

September 25, 201213 yr

Author

Aha - I think I figured it out. I had a clean .jar, but I had also copied over a modded .jar.backup, which was loading into the .jar. To prevent this from happening, I would recommend including a clause in your backup function to check the md5 sum of the .jar.backup.

September 25, 201213 yr

You mean like these ones?

    if not md5_c == clean_c:
        print 'Warning, Modified Client jar detected'
        print 'Continuing with decompile may produce unpredictable results'
        print 'If you continue, do not come to the FML or Forge team with decompile issues.'
        answer = raw_input('If you really want to continue, enter "Yes" ')
        if answer.lower() not in ['yes', 'y']:
            print 'You have not entered "Yes", aborting the decompile process'
            sys.exit(1)
            
    if not md5_s == clean_s:
        print 'Warning, Modified Server jar detected'
        print 'Continuing with decompile may produce unpredictable results'
        print 'If you continue, do not come to the FML or Forge team with decompile issues.'
        answer = raw_input('If you really want to continue, enter "Yes" ')
        if answer.lower() not in ['yes', 'y']:
            print 'You have not entered "Yes", aborting the decompile process'
            sys.exit(1)

Yaya, I added them in for a reason.

I do Forge for free, however the servers to run it arn't free, so anything is appreciated.
Consider supporting the team on Patreon

This topic is now closed to further replies.

https://forums.minecraftforge.net/topic/2315-issue-setting-up-forge-modloader/

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java.util.ConcurrentModificationException: null - Exception in server tick loop

Use Java 17 instead of Java 21

By TileEntity · 5 hours ago5 hr
Internal Exception help

Add the crash-report or latest.log (logs-folder) with sites like https://mclo.gs/ and paste the link to it here

By TileEntity · 5 hours ago5 hr
java.util.ConcurrentModificationException: null - Exception in server tick loop

Hi! It's been days that sometimes, when I connect, not everytime, my server crash a few minutes after. I don't understand why and it's getting frustrating.

Here is the full crash report :
https://pastebin.com/QbSvWEiZ

By Aisu · Posted 7 hours ago7 hr
Internal Exception help

Every time I try to run a single-player game in a modpack I made, I get an "Internal Exception: io.netty.handler.codec.EncoderException: java.io.UTFDataFormatException: malformed input around byte 129" Is someone able to help me?

By flameofdeath303 · Posted 7 hours ago7 hr
Can't boot server

These are the Minecraft Forge forums, you should probably ask for Fabric support wherever they give Fabric support for best results.

(https://forums.minecraftforge.net/topic/125488-rules-and-frequently-asked-questions-faq/ very first item listed there)

By Ugdhar · 10 hours ago10 hr

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Issue setting up Forge Modloader

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java.util.ConcurrentModificationException: null - Exception in server tick loop

Internal Exception help

java.util.ConcurrentModificationException: null - Exception in server tick loop

Internal Exception help

Can't boot server

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