https://bugs.winehq.org/show_bug.cgi?id=52253
--- Comment #5 from dragonwarriorxtreme@gmail.com --- This has been figured out to be an issue with ncrypt. Santino Mazza has committed several ncrypt fixes including an "SUCCESS stub" workaround that helps get past the verification of ncrypt signatures.
Actual implementation of ncrypt verification would be nice, but this will do for now. The remaining issues appear to be the same ones that have appeared since the initial WineHQ reports (installation fails at Team Helper, IDE still fails to run due to an exception), although I don't seem to get any "invalid ACL" issues anymore.