I have an application I worked on in Director 11 (it was originally developed in an earlier version) that when I publish an exe file will run correctly but the .app I make for Mac will crash with "Script Error #valentinaInit". It uses the Director projector file as a shell to a Flash application that the user interacts with and stores and accesses the information from .vdb database files, which are created with other Director files. If this is too general please ask more questions.
Since valentinaInit() is the first(?) call to Vallentina, I'd guess the xtra isn't available to your Mac projector.
Would happen to know how I can get the Mac version, it has Xtras but they're in the Win subfolder of the Xtras folder.