Connect a ME cable to a compact machine and it will crash.
Relevant Mod Versions:
AE2-rv2-alpha-4
compactmachines-1.7.10-1.6

Crash Log: http://paste.ee/p/PlSTp

I know it is an alpha release of AE2, so I don't expect it to be fixed soon. I figured you might want to know anyway.

Sure, thanks for the report. Though you should probably report it to the AE2 guys as well - its after all their API that broke ;) I'm sure they're happy to help.
I won't touch rv2 before it's out of alpha. That might indeed take some time.

I have given them a log and let them know too (just in thier channel, I'll work on submitting an issue later).

I did a build myself and the only thing required was to change ./src/main/java/org/dave/CompactMachines/integration/appeng/CMGridBlock.java line 38 from public boolean isWorldAccessable() { to public boolean isWorldAccessible() {