Wow! Avast hates this trainer more than any other I've ever used. It's kinda funny watching it continually trying to delete it while I'm using it.
Actually, the only things you have to do is to create file exclusions for the trainer exe file and the tmp file called - ~CheathappensTrainer.tmp - (located in the Windows tmp folder -> C:\Users\YourWindowsUserName\AppData\Local\Temp\).
Maybe you like to have a look on how to do it -> Link
I'm pretty new to using trainers so can some one tell me how to activate the editor function
Every trainer comes with a readme file or has instructions embedded in the user interface. This trainer here comes with a PDF file.
You need to be in the actual gameplay where you can run around and such. ALT+TAB out to Desktop and open the editor with the button down below - Open Editor
You can enlarge the trainer to see all of the options listed there and their values. Change a value and tick the box in front of the designated option to make this new value stick if you like to.