Do you mean your entire device stops when you try to start the app?
Or just the app crashes?
Do you have ADB working? Try this:
Code:
C:\>adb shell
$ am start -n com.simplemobiletools.musicplayer/.activities.MainActivity
If it dies, open another ADB window first and run logcat in it before trying to start music.
(There's more fun over at the Onyx sub-forum
https://www.mobileread.com/forums/fo...play.php?f=220)