Sorry Michael.
I did not intend to offend. I am just trying to help out!
I do have quite a few problems with PFE, and most of them I have been able to solve/resolve.
My posts
viewtopic.php?f=4&t=1471 and
viewtopic.php?f=4&t=1475, and
viewtopic.php?f=4&t=1430, show that I am active here, and trying to be helpful.
Just another suggestion? Your antivirus program?
I just had a very similar problem with the latest FsBuild 2.4.0.20 update. Avast prevented installation of the update, even though it is clean! I had to disable Avast to install the update, but then Avast also deleted the shortcut for FsBuild! I have now placed it is the exclusion list and restored the shortcut! It works fine now!
Rgds.
Terry