Tested today (fast I'm afraid) on a Vista, with a few photos available around. Although I do not claim to have tested it deeply, I have to note the following: The help needs more details and/or some examples. It took me a while to finger out how to perform plate solving and still I'm not sure I got it right. How I specify (add) my equipment, ie camera , scope etc? I did not realized that I need to download some catalogs. At first I tried to solve a photo from Cygnus with whatever the program had inside out of the box and the program crashed (sorry I do not have better feedback to provide on this). Then I downloaded a few more catalogs, I specified my hints, tried to solve, it took to the program about half an hour and at the end it produced nothing (what I'm expecting to see ?) I think a small example or tutorial is needed.