UNABLE TO DOWNGRADE CLIENT VERSION

Hello, I'm having trouble downgrading my version of EFT. The patcher has been giving me different errors all night and so far I've ironed them out however I've been stuck on this problem for over an hour now and I'm giving up and asking. Whenever I run the patcher I get the error "Object reference not set to an instance of an object" when the patcher reaches the file Unityengineui.dll. I've uninstalled and reinstalled both the game and patcher numerous times tonight already. I've tried to copy the file from the game and the patcher data and to no avail. Launching the game and waiting 10 minutes doesn't help either (like the FAQ recommended).

Thanks in advance!

7zip

Already did. I've uninstalled and reinstalled the game and downgrader numerous times already. I've restarted my PC after reinstalling too. Ok so I just ran it and after the millionth time and it worked. I made another new folder and copied the game files there and it worked.