Bleank

Yes, I can erase if I either hit E (keyboard or express key on the tablet) or if I select the eraser.

I've indirectly solved the issue by choosing to put Alt and Right Click on the pen instead of Erase/Pen and Right Click.

I'd still be interested in figuring this issue out though.

For the moment I have no solution for you..Moreover we didn't have any XP-PEN at the office for testing..