Quote Originally Posted by MindCrime View Post
i have up to date drivers and no overclock or anything special on the 270x. it ran solo collatz in about 31 mins but i wanted to work on some other gpu projects, and collatz has been down. So i moved onto MOO, which i have run without problem on a 750ti and 560gtx. Both of which have previously been installed on this machine and I never ran any particular driver sweep. This is the only project that the ati card has problems with, that i run. They nearly instantly error out and start a new WU and continues until boinc backsoff updates.

I have reset the project and rejoined. I've also tried a modified app that also errorred out but with a bit different behavior. I honestly haven't worked on this issue since asking about your status a few days ago. I have the 560 and the 750 working on it on/off so not a high priority for me.
I would run Display Driver Uninstaller on both Nvidia and AMD drivers, then install an earlier version of Catalyst. My HD 7790 prefers 13.4 or 13.12 for some projects but works fine with latest drivers on others. If that doesn't work, it isn't unheard of to have a card that just doesn't get along with a certain project. Good luck!