I'm not a tech person or anything and hopefully Gary will
respond to your inquiry. All I can tell you is I had the same
problem for two weeks and I tried everything, including
uninstalling and reinstalling FP10 etc. I also went on a bug hunt.
Bottom line after all that aggravation I had to do a complete
system restore because when I tried to download FP10 something was
corrupted. Wait for Gary to respond before you try anything this
drastic. Believe me I completely sympathize with you.