I try your solution without results.
This morning I receive this message during the starting of WIN10, TWCU Something wrong when loading the DC_Wff.dll.
I reinstall TCCad two time and reinstall the .dll without success. I don't understand TCCad is running properly during six month or more and after crash every time
I think the problems come during the update of WIN10. Can you check this way, maybe other .dll are corrupt, I need to finish my job quick.