Ok I just found my issue and it is really weird. My pc was blocking all the dlls from the custom theme, even though I have turned off firewall and scanning in this drive. I guess it is a new windows feature. I had to right click on properties and select unblock and apply, I ended up running this command from cmd to unblock every dll in my Launchbox folder just to be safe Get-ChildItem "R:\LaunchBox" -Recurse -Filter *.dll | Unblock-File
Anyways, thanks a lot for trying to help, posted the solution in case anybody else has the same issue, that was really weird!
