You need to delete installed application from Applications folder in iTunes. Then, drag mobileprovision file as first, just after that .app folder.
If You all have those problems, seems like Com2Us made a mistake in exporting .app file. I guess, You have to wait for official announcement with problem fix.
Actually when I download it I don't get the provision document =/ So I've been trying to figure out how to get that for the past few minutes...
Oh. Okay I see it. Well my ipods syncing right now so it'll take like 10 minutes till I can try again.
Okay I got the modified resources error like others. BUT I also got the same error for another game I bought off itunes? This may be a problem with itunes rather than heavy gunner.