Corel service pack 3 download error

Hi Guys, I'm a newbie and need your help as I am also a bit of a techno eedgit!

I was downloading Corel X5 service pack 3 and half way through it aborted.

Since then I cant open Draw although Photo Paint etc. are still working.

The error is APPCRASH

I have tried restoring windows to earlier version and also error fix through uninstall/change feature.

Still no joy.

Anybody out there that can help please?

 

Cheers

Frank