See above my post and make sure the trainer is in a folder excluded from security software scans.
I have used the Trainer Manager to clear the temp folders and verified the corresponding directories. Re-downloaded the trainer and rebooted my computer. Still getting:
14:56:10: Controller detected
14:56:10: Zombie Army 4 Dead War, 3.12 (WINDOWSSTORE/EPIC/XBOXGAMEPASS)
14:56:49: Successfully attached to za4_vulkan
14:56:50: ATTENTION: You're running a STEAM game but the trainer was for WINDOWSSTORE/EPIC/XBOXGAMEPASS, the trainer or a cheat may fail to activate
14:56:50: Collect Health, Script error in line 9: Cannot find aob for 'Unlimited_Health'
I believe the problem is in the Trainer itself. The Steam logo is missing from the trainer option selection screen as well as in the debug info I pasted above.
Oh, and yes, the folder and file are both excluded from the antivirus scanner. Also tried turning off the AV but same deal.