I just rooted my Samsung Galaxy G4 I9500 today. It was working fine, I even restarted it a few times just to test everything was going nice and dandy. I also installed two apps to see if SuperUser was working properly (busybox and titaniumBackup) and both seemed to work fine.
Now, while trying to make a nandroid backup I entered recovery mode and touched "reboot device now". Afterwords, the device stopped starting properly.
As described in the title, the screen remains black with messages popping up saying something like "[x] app has stopped working". Trying to turn off the device gives me the usual windows (turn off/airplane mode/restart). Also, I can change the volume. Any idea of what could be going on?