Hi Team, did you go the Tools, OPTIONs screen and scroll down in the GENERAL tab and click on "Ignore System Exit Requests"? Also, for the SMS Ring Tone via MP3, you can only cut it short or just make sure you exit out of the SMS. No other resolution.
I also found out, for those who have the X Button installed on there devices, that it EXITS OUT of all apps. So it will close out PCP.
Let me know.