Complete game melt down after installing Vidiotmaps Map Pack??

First of all I'd like to point out that the Map intention was good - But the Mac version made the game completely dis-functional for my newer Macbook Pro that had been running perfectly since purchased 4 months ago. The author of the site was as helpful as could be but had no clue, he doesn't own a Mac to test.

Installed the map pack. Immediately after installing could not get to log in screen, just black screen, forever. Next launch I told it to verify files, which it did. Still black screen. Being a CPU repair technician for 20+ years I did all the basic repairs and file checks, then deleted the COH app (forgot my screenshots were in there so there goes my whole pic history unfortunately) and tried to re-install. The installer did not work. I finally had to make invisible files viewable and delete everything connected with the game (system files, prefs, et). The installer is working now and the long DL install is in process. Don't know what the problem is but the game does not like something installed by the Mac version map pack. I'm running the newest operating system, everything totally updated.

Not a mac user, but I've seen several times people recommending deleting the .plist (I think that's what they were called) files assocated with CoX (more so Cider) when CoX on the mac craps out.

We've been saving Paragon City for eight and a half years. It's time to do it one more time.