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.