“Uncaught exception: java.lang.ClassCastException”

tryin to use phonepix on my phone. I installed it and it was working fine on my blackberry 8700c but the desktop program wasnt. So I deleted it from blackberry and desktop. Read some more about the program found what I was doing wrong. Re-installed now desktop software works fine but i get the error on my blackberry

i get the same thing when i try and load yak-on
grrrr...

i find that it's usually an install problem.

Delete it and reinstall it.

If you can't get it that way, do a Desktop Application Loader install.

If you can't get it that way, do an Over-The-Air install.

I have deleted it and re-installed it w/app loader 3 times same thing. It was giving me error on the desktop but I got it working then it started giving me the error on my BB. Im not sure if there is an over the air install fo this app