I have the black Acer tablet and the latest upgrade of PS installed (August 2013). I am constantly getting buffer underflow "errors" and am getting really frustrated since there does not appear to be something specific causing it. I will stitch out a pattern one time or several without a problem and the next instance will cause buffer underflow errors - sometimes twice within several seconds on the same pattern. I have to cancel the stitch-out, re-mark my area and hope I can line up the stitches with a new start/stop to finish stitching. Has anyone figured out what is causing this and how to stop it?