Are you sure your Anti-Virus or other programs aren't interfering? Sure sounds like it, if it works at first and then stops all of a sudden. Perhaps add the trainer to the exception list, sometimes turning your AV off isn't enough.
Make sure you run both the game and the trainer as Admin.
Perhaps re-download the trainer, just in case?
If all else fails, try going past the troubleshooting guide: www.cheathappens.com/trainer_troubleshooting.asp
it's not because of my Anti-Virus... well i found a "fix" for Orbital Drop,game crashes when using Orbital Drop if Plasma Force Armor option is activated.
dunno why but today the trainer just keeps saying "active" every time I'm activating(F1)...,didn't happen before I'm always running as admin,and i re-download but this issue persists,really weird.
i looked into the troubleshoot guide and downloaded Combined Community Codec Pack,but it didn't change it.
recently i have installed Anti-Keylogger program called Key Scrambler,it encrypts my keystrokes,is it possible that it's causing this non-stop "active" every time I'm activating the trainer?(i have other trainers by CH,and this is the only trainer that does it....) UPDATE: well it's not because of Key Scrambler..i turned it off and still the same =.=