I'm a Mac user, so take this as a trouble-shooting suggestion only.

I'm wondering if your security software might be preventing FH from writing
to the toolbars preference file.

If you have any other software that runs in the background, such as a
screensaver or scheduler, it might be causing problems.

Are you able run FH (as a test only) in Safe mode or with the security
software turned off?

Judy Arndt