Look into "C:/Users/[your user name]/My Documents/My Games/" for OpenXcom folder. It is possible OpenXcom is searching there, even though it shouldn't.
"./User/" exists and windows usually don't distinguish between cases. If OpenXcom is searching in your private folder, you can copy your mods and saves there.
Just had a look and there isnt an openxcom folder in there, and when I check the game it shows this as the pathway, the same folders i'm using.
I'm just going to try to reinstall the mod and see if it fixes the issue.
Yup it seems to have fixed the issue somehow.
By the way how do you get the 1st turn TU submod to work? Just put it into the Xcomfiles ruleset?