Modpack not woring

[RadioactiveSheep]

I recently moved my modpack to a new computer and it is no longer working. The modpack does not launch and it is shown in the error log but I do not know why.

Error log:

[sEVERE] [ForgeModLoader] Unable to launch

[b#211] 2015/01/14 10:32:37 [iNFO]  java.util.ConcurrentModificationException

[b#211] 2015/01/14 10:32:37 [iNFO]   at java.util.ArrayList$Itr.checkForComodification(Unknown Source)

[b#211] 2015/01/14 10:32:37 [iNFO]   at java.util.ArrayList$Itr.remove(Unknown Source)

[b#211] 2015/01/14 10:32:37 [iNFO]   at net.minecraft.launchwrapper.Launch.launch(Launch.java:114)

[b#211] 2015/01/14 10:32:37 [iNFO]   at net.minecraft.launchwrapper.Launch.main(Launch.java:27)

[b#211] 2015/01/14 10:32:38 [iNFO]  Java HotSpot Client VM warning: ignoring option MaxPermSize=128m; support was removed in 8.0

[b#211] 2015/01/14 10:32:44 [iNFO] Analytics Response [runModpack]: 200

 

Anyway help would be appreciated thank you.

Edited January 14, 2015 by RadioactiveSheep

[plowmanplow]

Add Lexmanos' legacyjavafixer-1.0.jar to your pack. This is a Java 8 issue for Forge versions on 1.6.4 and 1.7.2 which is fixed by that mod.

 

http://t.co/9olGYnwZBi

Edited January 14, 2015 by plowmanplow