Don't feel bad, I have a "supported" solution, and C1 9.x has failed me dismally. To be honest possibly the worst issue I have had with any software in over 20 years.
Last night along in a attempt to process out just 5 files, it took over 25 attempts. Same old error.
Originally I was also told "you have a unsupported platform", so I made the switch to a GTX970, which is support as it all of the other of my equipment and the error I am getting when trying to process out a file has continued. Obviously a something that was done by the developers in creation of 9.x as I have never had this error on any previous version of C1.
To process, I have to run a script provided by Phase (which I do appreciate) which totally disables open CL from C1. I still use open CL for working on files as if you don't the loss in speed is terrible, especially in drawing masks, and layers. So when I am working on files, I have to run the same script to enable open CL.
Not the way I prefer to work, but it has become the standard for me now with C1 as this error has gone on for months.
Paul C