Mr. Dawson,
You were correct in regards to item 1, reinstallations of FSX. I have installed and re-installed FSX several times in the past. I did have some problems loading FSX before due to re-installation. For some reason FSX is sensative to this. Solution: I got FSUIPC to load by uninstalling FSX and creating a new user account on my computer, then re-installing FSX and other flight sim related software under the new user account. When I loaded FSUIPC It worked without any problems. I don't know if this is the only solution , but for me it was the cleanest. I'm sure this issue will crop up with other FSX users who are installing FSX superbug, especially with the upcoming release of TACPAC. Thanks for all your help.
Cheers,
Brian.