I've had this bug 2 times : -a long time ago, I used pretty the same configuration, but with older tools/addons/updates -now, the only thing I've changed is that I've added some addons (Java, VLC), some files manually, and some CMD commands. Of course I've updated the whole thing. I'm pretty sure it does not come from the addons. I've noticed it comes up only when using the command prompt !?!?! Each time it was the HID driver. The same thing, during runonce, using CMD.