Maybe this could help with tracking down the source of the ringtone problems:

After noticing the ringtone problem today, I decided to reboot the phone to see if that would fix it. I had some trouble getting the phone to start up--the first two times it got to the NOKIA logo and then the screen turned off. Finally on the 3rd attempt it booted up. Ringtone was still the default Nokia ringtone. So, I switched the profile to "Silent" using the power-button menu. Then I tried to switch back to "General" via the same method, but the menu still had the "Silent" option, even though the silent icon was displayed in the status bar. So, I clicked on the status bar and went to the "Profile" menu and selected "General" from there. Then I called my phone and the correct custom ringtone was played. I use ProfilesX.

I'm concerned about the boot-up problems, but that may be unrelated to ringtones.