Quitting on Start-Up

I need help. Motion has been running fine and now today it quits on startup, it has never made it past that everytime. I have sent bug reports, but at this point I figure what's the use. I have tried opening Motion everyway under the sun and even used export from FCP. Do I need to re-install and if so how do I un-install it first? I love Motion, but not this headache.

Thanks in advance,

Ryan

G5 DP 2.0
3 GB RAM
ATI Radeon 9600 Pro
OS 10.3.5
Motion
FCP 4.5

You might try trashing the com.apple.motion.plist and repairing permissions.

Also run some OS X maintenance routines.