Hello Pete!
I have just recently installed your FSUIPC4 for FSX, but I seem to be having an issue getting it to work. I have been trying to get it to work for the past week or so, but everything I've be trying doesn't work. I have downloaded version 4.8 from multiple sites and still run into the same problem. When I start my FSX and click "Fly Now" I either crash as soon as my loading screen hits 100% or shortly after taking off (within the first few minutes). I get a FSX.exe error complaining about memory. Memory doesn't seem to be the issue, however, for once I remove the .dll file from my modules folder every thing is fine.
Over the last week of attempts, I have read multiple forums and the like looking into the problem. I have done everything from "trusting the certificate" to trying to "run as administrator". My real red flag seems to be when I try to run as an administrator. I right click on the "Install FSUIPC4.exe" on my desktop or in a subfolder, and try to run as administrator. I get an error that reads "The service cannot be started, either because it is disabled or because it has no devices associated with it." When I just run the .exe without using the run as administrator, it tells me it has been installed to FSX "okay". I, however, will crash shortly after clicking "Fly Now".
I have used your stuff in the past couple of years with absolutely no complaints, which is why I'm so confused as to why this will not work as I try to get back into the swing of things with FSX. I appreciate whatever time/help you have to offer!