ED,
The latest update broke the game for some third party modules like the Mirage F1. Most anti virus software seems to think some of the modules are trojans specifically the .dLL files. Once it flags them the module is no longer useable and it removes your authorization to use them. Running a repair doesn't resolve the issue because it will not allow the effected .dLL files to be deleted or overwritten requiring you to force delete them. Only solution I have found is to create exceptions for all dcs files in McAfee and then disable all anti virus programs. That seems to resolve it but is incredibly annoying to have to do. Not sure why this update makes DCS elements look like a virus.