Dumb question, did you accidentally put your switcher and batch files etc. in your Mods folder, rather than your 1946 one? I recall someone else doing that and not being able to figure out what their problem is.
Nah, thats not it Bee - they're all in the main game folder.
Regarding the switch files, is it correct that UI 1.1 does NOT have these: EAX_ON,EAX_OFF, MkII_Gyro_ON and MkII_Gyro_OFF?
On all previous versions, these were installed, but no sign of them with UI 1.1.
Is this normal?
I would say that it is not normal. I have 1.1 installed and these .bat files are included, in fact, they are mentioned in the readme for 1.1.
It's still possible that something happened during your original download to one of the files ... Maybe you should get a new version of UI1.1 and the patch. Try down loading them again.
Its just a suggestion, but its what I would try next.
Good luck