Let's look at just one error message.

"Error creating C:\Documents and Settings\Janet\Local Settings\Temp\Networks.bmp"

That's what we could look at deeper. I suspect it's a permissions issue or someone deleted the Temp directory. While I have methods to deal with such I feel it is too technical to cover in a forum.

What you could do is to uninstall the quicklink software. Now you could create a new user account and install quicklink there as a test.

-> But how does this happen? Or rather how do we cause this issue? The most common cause I know of are registry cleaners and other such tools.

I don't think this issue is quicklink's to solve.
Bob