Hello Peter.
I have installed the latest version of FSUIPC and the problem is still there, if anything, slightly worse. I sometimes now do not get the Windows error box, but FSX just hangs.
I tried to look at the windows firewall settings. As far as I can tell the Windows Firewall has now been hijacked by my McAfee anti virus programme. If I disable the firewall ignoring all the dire warnings, everything works OK and FSX + FSUIPC starts and runs.
Regretfully, I do not understand your comments about SimConnect and .XML files at all. I am a pretty basic computer user. When I do a search on .XML files I get a list of about 27 .XML files, but none seem associated with FSX.
I looked on my FSX discs and there is a simconnect.dll file on there, but when I search the hard drive, I cannot find simconnect.dll anywhere on my computer.
I now do not think that the Windows 7 update has screwed anything up as I am sure you would have heard from other sufferers if this was the case. I also cannot understand how this error has occurred out of the blue. I have not installed any new programmes or hardware, but McAfee and Windows 7 updates arrive regularly.
Any help would be very much appreciated. Best regards,
Chris Hall.
Bournemouth.