Please Help Source Filter problems

[Detbasketball13]

Hello I am having problems playing videos on my htc touch pro 2 for verizon.
Even if i record a video the error shows up "The source filter for the file couldn't be loaded." when i try to play it.
All this started happening after i install this cab file "http://forum.ppcgeeks.com/htc-touch-pro-2/113300-youtube-not-working-metro-flashed-touch-pro-2-a.html"
i tried to remove the app but it wont completely remove.
i have soft reset the phone twice but no effect
I have no roms installed, never installed any roms or tweaks/hacks.
Please help please help