I had saved my game, exited SINS, and shut down my system.
I turned the system back on, fired up SDC and launched SINS.
And then nothing happened, well, nothing useful anyway.
Video switched modes, and then it just sat there. I hit the windows key, right clicked on the task bar, opened up Task Manager and killed SINS. I did this twice. On the third try I hiat Ctrl-Alt-Del and opened Task Manager from there. When I did that, I had a window which said:
Brush State (Pressed) TexturePixelBox is not within the Texture's Dimensions.
Brush: ActionGridSlotBackdropTech
TexturePixelBox: 3, 140, 53, 176
Texture: 0, 0, 0, 0
With buttons labled 'Skip,' 'Skip All', and 'Break'.
There were a large number of these, and I got bored hitting either 'Skip All' or 'Break,' so I eventually went back into Task Manager and killed SINS again.
Looks like my install got hosed somehow. Before I wipe it and re-install, anyone have any idea WTF happened?