If I uninstall a pgm. using CCleaner it will either give me options on (1) the uninstall throughness desired or (2) simple do the uninstall. It uses option 1 for "old" program, those install before I owned CCleaner. The problem I am encountering is I negected to uninstall the "old" canon Pgms. before I installed the new ones. The result was that the Canon prgs did not work, since old stuff interfered and CCleaner will only uninstall the new canon pgms.
I hope this clarifies my issue.
Richard