I am running pro-tools LE 6.4 with a Digi001 interface. My system as been running fine for more than two years and all of a sudden I keep getting an error message "Audio processing is conflicting with other CPU task. If this occurs often reducing the "HW Buffer Size" in the Play Back Engine Dialog may help prevent the problem -9129"

Now I have made sure that no other task or programs are running, I have reduced the Buffer Size in the play back engine and this error message will not go away and the longer the system stays on the more often this error message pops up until every time you hit the play button it pops up so you can't get any recording done. Also now, every time I bounce a session it shuts down Pro Tools when it's finished and save the file along with a file with a crazy name. I don't know what's going on. This studio is used for Vocals only. No major mixing going on just ruff mixes that are sent to a bigger studio. Any Ideas to fix the problem without buying an earlier version. I like the quality of the digi01.