It's a permanent change, but the only thing I'm disabling is the option to move the application to the SD card in the tablet settings. You can still move your song files (pdfs, audio files, etc) to the SD card inside MobileSheetsPro itself by just changing the storage location. The one thing I'm trying to prevent is the database and other important files from being stored on the SD card. I've had users lose their libraries due to faulty SD cards, and they had moved the app to the SD card, so they had no way to recover (they didn't make a library backup). I'm trying to prevent that scenario. If an SD card is faulty and you lose your PDFs, that's not nearly as detremental as losing the data in the database (which is your library in essence).
Mike
Mike