Then the registry entry may be incorrect. Did you install the original game that is in the first post?
I formatted my pc and before that it was working just fine(so yes i installed the original game correctly) although BFME was on the D drive and was standing as it is but T3A Online Launcher was gone so I re-downloaded and installed T3A again now i have this problem.
Hi, when i hit the "BFME" on T3A:Online Launcher it says "BFME installation not found" but BFME is installed with required patches on default installation directory. When i try to run bfme.exe first Launch image appears but then nothing happens. Running on compatibility mode or administrator mode also doesn't help.