Posted August 30, 201411 yr I just installed eclipse and forge src, I get this error when I try to start Minecraft with eclipse... [22:36:38] [main/ERROR]: Unable to launch java.util.ConcurrentModificationException at java.util.ArrayList$Itr.checkForComodification(Unknown Source) ~[?:1.8.0_20] at java.util.ArrayList$Itr.remove(Unknown Source) ~[?:1.8.0_20] at net.minecraft.launchwrapper.Launch.launch(Launch.java:117) [launchwrapper-1.9.jar:?] at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.9.jar:?] Java HotSpot 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release //I tried this with both 1.7.10 and 1.7.2 Forge src
August 30, 201411 yr Read the EAQ. BEFORE ASKING FOR HELP READ THE EAQ! I'll help if I can. Apologies if I do something obviously stupid. If you don't know basic Java yet, go and follow these tutorials.
August 30, 201411 yr java.lang.ConcurrentModificationException before Minecraft loads: Do NOT use Java 8 (for now' date=' it's being worked on)![/quote']
August 30, 201411 yr Author I already switched from java 8, is there still something still attempting to use the java 8 that I wiped and replaced for 7? I'll try to re-install everything and make sure its trying to use 7 edit: Yeah ok that did it, I deleted any trace of java 8 and re-installed eclipse and it works now, thanks guys.
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