No Idea sari, we need Melbo to confirm server etc..
After some more digging you can either
1. Disable ESET and also
2. Disable HIPS (look inside ESET and go to "Setup") - click into it and disable memory scanning
Play around and see what works for you
Glad it may have helped someone else
You have to do loads of different tasks, for example deliver supplies, clear minefields
Does Patrol Ops require a mod?
Are we using ACRE?