All of a sudden my right mouse button will no longer select in edit mode. In order to select, I have to use the C or B selection mode.
If I happen to push the right mouse button after one or more vertices are selected, the selected vertices are deleted. In object mode everything works like normal.
I'm using 2.76b and Windows 10, this is a new problem, it was working fine. Perhaps I inadvertently set something?
Tried a different mouse, same issue, reinstalled Blender, same issue.