Thank you. That was the answer. (For those following this subject - Right click on the FSX shortcut, click on securities, select the user name that you use and add the authorities needed)

Thanks. I have confirmed that I am running as the "administrator" but I still get the same result. I have sent you an e-mail showing you the error message. It may help

Successfully installed the V4 Installer and unzipped all supporting files into the same folder as the installer exe. On running the installer it will not load the Libraries file. It appears to load as far as - I think _ a request for fx_f16_ab.fx and stops with a "denied access" failure co...