you running the trainer "as admin"? Usually trainers and editors require that and turning off AV background checks. I'm lucky, my AV isn't garbage so I can keep that going but I have always had to select "run as admin" for the them. Hope that helps...
Yeah, forgot to add that. Running as admin yielded the same results. Same little screen telling me to "click to start program" and then disappearing into oblivion after I click "ok." I'm dying for some weapon fragments. lol