I've seen just about everyone successfully get the pack to work, but mine wouldn't load. I'm running the .37 BETA on a Mac 10.7.4. Not ideal.
Long story short, I messed with unzipping and removing files, and narrowed the problem down to one file: MonsterMotor.soundscript
After deleting this from the pack, it worked perfectly. To anyone familiar with the guts of V4, is deleting this file a problem?
Feel free to delete this post if it's deemed too menial, but if anyone else runs RoR on mac, hopefully this workaround could be of help.