We have a user which manages a modpack and he is trying to load our mod in smp, in ssp everything loads fine in smp this happens on loading:

 

[16:21:27] [server thread/WARN] [FML/]: Zip file minecolonies-universal-1.10.2-0.4.786.jar failed to read properly, it will be ignored
java.util.zip.ZipException: error in opening zip file
at java.util.zip.ZipFile.open(Native Method) ~[?:1.8.0_101]
at java.util.zip.ZipFile.<init>(ZipFile.java:219) ~[?:1.8.0_101]
at java.util.zip.ZipFile.<init>(ZipFile.java:149) ~[?:1.8.0_101]
at java.util.jar.JarFile.<init>(JarFile.java:166) ~[?:1.8.0_101]
at java.util.jar.JarFile.<init>(JarFile.java:130) ~[?:1.8.0_101]
at net.minecraftforge.fml.common.discovery.JarDiscoverer.discover(JarDiscoverer.java:50) [JarDiscoverer.class:?]
at net.minecraftforge.fml.common.discovery.ContainerType.findMods(ContainerType.java:49) [ContainerType.class:?]
at net.minecraftforge.fml.common.discovery.ModCandidate.explore(ModCandidate.java:78) [ModCandidate.class:?]
at net.minecraftforge.fml.common.discovery.ModDiscoverer.identifyMods(ModDiscoverer.java:141) [ModDiscoverer.class:?]
at net.minecraftforge.fml.common.Loader.identifyMods(Loader.java:381) [Loader.class:?]
at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:520) [Loader.class:?]
at net.minecraftforge.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:97) [FMLServerHandler.class:?]
at net.minecraftforge.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:328) [FMLCommonHandler.class:?]
at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:121) [ld.class:?]
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:431) [MinecraftServer.class:?]
at java.lang.Thread.run(Thread.java:745) [?:1.8.0_101]

Why is it a zip file?

It isn't that just might be the whole problem =D

Does it work in your minecraft?

mods need to be a .jar

It works in Intellij and it works in single player.

They have this jar file:

 

https://www.dropbox.com/sh/9cnqcjl0nan57cy/AABGziT_6Sq1nSUfP_XoLHpCa/branch/feature/%2357-Update-to-1.10.2/minecolonies-universal-1.10.2-0.4.786.jar?dl=0

 

Idk what is wrong with it?

The user reporting this error states that is starts perfectly well in 1.10 ssp but throws this error in smp

May there be any reason for the server version not recognizing our jar?

Okay user downloaded the jar again and it works now!

 

Can close this.