Something is still blocking the trainer (or moved it to quarantine).
Temporarily disable/uninstall all your AV/other security software, clear/wipe your cache/Windows TEMP folder, reboot your PC and run the trainer with admin rights.
[Edited by Taurusplopp, 4/1/2017 9:31:37 AM]
place save game here where you are holding the gun that overheats and give instructions
The one equipped is the sniper rifle and instead of ammo, it shows as percentage. Every shot the % goes down, you can either fire until it's 0%(which makes the recharge longer) or stop before it's 0% and let it recharge that way.
Hope that helps and thanks.