I cannot make my character vault in 0.61. I am a long time stand alone player, and I have not changed my key bindings at all. I have vault / jump / step over (whatever you call it) bound to 2 x NUM0.
I tried to delete the binding through the UI. I removed the binding to 2 x NUM0 and changed it back to "v". I hit apply but still could not vault. I then went back into my settings, and it was still set to 2 x NUM0.
I've had this config file for a long time and have played through at least 5 or 6 patches without changing it.
I have checked my config files and they are not read only.