Dear Chris,
this isn't rather a bug, i guess, but i am wondering why there always when i close MRICON an error message appears telling 
******************
Unable to create file
"...\mricron.ini"
Press OK...
Press Abort...
********************
?

And despite this message, that *ini-file will be indeed created and updated... 

I guess it is rather a win10-related problem?!

best, adam