Problem(s) Encountered:

1) Guider hung up shortly after the start of the night.  Restarting the Maxim DL software yields the following error message upon trying ''Connect'':

Error initializing camera or filter wheel

Error opening camera

The camera settings are incorrect

2) About 10:45, Andor stopped responding.  I tried a couple dozen times unplugging the USB cable and putting it back in, and every time I got:

 USB Device Not Recognized

 One of the USB devices attached to this computer has malfunctioned ...   (etc.)

Solutions:

Found the Andor back up and running this morning, apparently after a reboot.

FLI guide cam took a little more effort. Back up and online now.  Not sure exactly what corrected the issue, but I suspect cycling power to the camera and rebooting the PC.