You need to remove just the file /etc/btnx/btnx_manager - then it will work again.
I think it happens when you start the gui, don't finish configuring your mouse, and then try to start it again.
You need to remove just the file /etc/btnx/ btnx_manager - then it will work again.
I think it happens when you start the gui, don't finish configuring your mouse, and then try to start it again.