06-05-2014 10:49 PM
Hi and Welcome to the Community!!
Unfortunately, from your description, I cannot tell exactly what you tried, so I will risk redundancy...please try this sequence:
1) Remove AppWorld from your BB
2) Do a Batt-Pull reboot (power on, remove battery, wait, insert battery, wait), even if redundant to the one you did in step 1.
3) Install (on your BB) a fresh copy of AppWorld
4) Do another Batt-Pull reboot
5) See if it now works.
If anything does not work, please be explicit...as in, "I can't delete it ither[sic]" doesn't actually tell us what you did to try and delete it.
Cheers and let us know!