Tophe I tried those configs you provided and pasted them into TA2DST.ArmA2OAProfile and TA2DST.ArmA2Profile and still did not have the difficulty numbers show up in the program. I still got the error when trying to reset.
There is something wrong with the parameter Value with an ID of 55
It thinks it should be between 'Minimum' and 'Maximum', and doesn't seem to accept numbers.
The error is as follows:
Googling this it seems to be a .NET issue:
Value of '55' is not valid for 'Value'. 'Value' should be between 'Minimum' and 'Maximum'.
Parameter name: Value
Settings file is corrupted.
You should reset it to default settings to fix the problem.
Do you want to rest the file?
So I'm uninstalling and reinstalling .NET Framework 4 from here:
I'll edit this post after I do so.