Got it!
By running what amounted to a complete bisection of the home folder of the problem account, I've isolated the problem as occuring in the Unity MT Grab Handles plugin. Disabling that plugin allows me to log in to unity 3d.
Got it!
By running what amounted to a complete bisection of the home folder of the problem account, I've isolated the problem as occuring in the Unity MT Grab Handles plugin. Disabling that plugin allows me to log in to unity 3d.