That may be an easy one: Don't disable your AV.
Depending on your AV please create an exclusion rule for at least a file called - ~CheathappensTrainer.tmp - located here -> C:\Users\YourWindowsUserName\Cheathappens\Work\. If applicable only the file should suffice for this but you also could create one for the trainer exe itself.
Because other trainers also use a tmp file similar to this one create a wildcard exclusion like this - ~CheathappensTrainer* - or exclude the Work folder in the aforementioned location.
You need help with the exclusion rules? Please go here -> Link, pick your AV product and watch how it's done. If you don't find it there please let me know.
If you use a Comodo Personal Firewall v8.x you should uninstall it completely.
Please verify that you use our latest trainer PATCH 04.11.2017 with the latest/updated game version and that you ran the trainer with admin rights.