I know when I loaded the AU version in Reaper, it used to crash on me - but I'm sure I was able to use a VST version or something like that. Sorry, a bit vague at the moment, been a while since I used it. Highly unlikely that Peavey will be updating it anytime soon as we were lucky enough to get an RTAS version really!
Does Revalver work okay for you as standalone? Doesn't Logic have some AU 'compatibility' check that it runs on all installed plugins? What did that report?
Download Reaper and check Revalver in there just to see if it's working as intended in another DAW. I honestly dunno what else to suggest dude!
EDIT: I'll see if I get the time to reinstall Logic later and test Revalver in it!