QTR-Quadtone RIP

I'm not a Windows user, but this is how I understand how to fix this. You need to open the curve creation module in the QTRgui, open the qidf file, then click show curve. It will spin and hang up, and you will need to close the program and when you look in the curve drop down you should see the one you just reinstalled. I think you will have to do this will each of the profiles. 

If you had all the .quad files you could put them in the correct folder and reopen the gui and they should all be in the curves drop down

Hope that helps,
Richard Boutwell