Well, by deleting the file, my two button pen now has tip for annotating, right click on button one, radial menu on button two and eraser on the back of the pen, my one button pens with eraser at the back have tip to annotate, right click on button and eraser at the back. This can't apply to the stock pen as it has no eraser, but something like this: Amazon.com: Penabled Tablet Pc Eraser Pen: Electronics does have an eraser and getting it to work required setting it to a two button pen before and assigning the eraser function to button two. However, it would break the functionality of a pen like this one: http://www.amazon.com/Fujitsu-Digit...F8&qid=1399928021&sr=8-1&keywords=fujitsu+pen as it has two buttons + an eraser. Here's what my Wacom settings look like, the eraser option was missing altogether before. However, I have found a place in the windows pen settings in the control panel where there is a tick box to enable or disable the eraser after seeing your post and digging through the CP, so if the tick box is there, there might just be no need to actually delete the .xml file. If any Q584 owner would check whether that tick box actually works would be nice.