== User's Troubleshooting Guide ==
'''Starting a Hartmann sequence does not always work, it just takes one frame and then exits'''
* The Control GUI should grey out and shuttle through the set of Hartmann exposures - if it does not grey out within a few seconds, it is not working
* Kill the GUI and restart it
* Click ''Run'' to start the Hartmann sequence again
* Usually restarting the GUI does the trick, but the most extreme case required a couple of GUI restarts before the sequence would run properly
* This problem went away for more than a week, but it has subsequently reappeared so we will continue trouble-shooting
'''Attempts to do multiple exposures (e.g. for flats) lead to alternating black (empty) frames, something's broken in the GUI!'''
* Abort the exposure and kill the SpUpNIC Control GUI
* Clicking the "reset exposure controls" button on the advanced tab of the Exposure/CCD info pane does not clear the problem, so open a terminal and type "restart_services"
* Restart the GUI and proceed with single exposures