... and idk if its even your issue or not but idk who to submit these reports to
(i already sent the evilcraft people a report)

Here is an edited crash report
https://paste.dimdev.org/iwununevuj.rb

Here is the whole thing
https://paste.dimdev.org/iqitovixoz.mccrash

Evilcraft has a harddependency on IC2Experimental. Not IC2Cs fault

Basically instead of using core classes they should use the API. Because then you get compat to both automatically.