attack of the b-team won't work

[russianpigboy12]

I have seen a lot of complaints about attack of the b-team not launching. this is because it is not compatable with the new version of java. if you still want to play you need to uninstall java 1.8 and download a 1.7 version.

[Munaus]

we know http://www.technicpack.net/article/view/concurrentmodificationexception-in-java-18020.89