Missing function

Have Win XP Home SP3, Firefox 3.01.
On rebooting I get a warning message just before the sign in pane opens which advises

" 1st Delete program not found--skipping auto check"

Apparently this lack causes me-at times- to have to click on the "X" twice to close a program. Quite annoying. I have run sfc /scannow twice with no apparent effect on fixing.

Appreciate any other possible solutions.
 
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