no nothing works, have repaired permissions says failed to open driver files may be missing or damaged
Okay, next step. Returning to your original post, you said that you uninstalled the Canon software. How do you do that, or, did you use the Uninstaller supplied with the Canon CD?
I suggest that you uninstall again,
absolutely everything to do with the Canon scanner. Further, I recommend that you use a third-party application like CleanApp, which will search out every file associated with the Canon software, and choose the option to move files to the Trash (you
may need one or two of them later, hopefully not).
Once you've done that, use Finder > Cmd-F to search for any remaining files that maybe left tucked away in the MacOS. If you do find any, delete them (to Trash).
Restart your computer. Then, reinstall the Canon scanner software and driver update for Leopard. Perhaps going through all that will clean out the damaged file, or finally install the required driver file for 10.5.5. Keep us informed of any progress - or otherwise
🙁.