Has anybody had any luck with this software with the new Catalyst 14.6 beta drivers?

I just gave it a try and was initially very excited because I was getting hash rate of 4 MH/s on my 280X. Then I noticed that I was getting lots of HW hardware errors, which I had none before. No matter how much I lower the intensity (tried 11) I still get lots of HW errors. I then tried deleting the new x11modTahitiglg2tc8192w128I4.bin and restoring the old .bin file (from Catalyst 14.4) and now I get no HW errors but my hash rate isn't quite as good as it was previously.

Why would the new Catalyst drivers change the OpenCL compiling so dramatically to cause hardware errors?