Have you downloaded and/or installed any of the updates for it? You need to loin the Meade 4M (or something like that) community but it is free to get the updates. I would also try uninstalling the program and re-install it. It would be a good idea to re-locate the images you do have out of the program if you un-install the program so you do not loose them.
A disk check would also be a good thing to do.
I am doing this from my Windows 2000 computer so some of the wording may be slightly different.
Go to MY COMPUTER right click on the C drive and select PROPERTIES. then click on the TOOLS tab near the top, click on CHECK NOW tab in the error checking section. click the check box for AUTOMATICALLY FIX ERRORS and SCAN FOR AND ATTEMPT RECOVERY OF BAD SECTORS.
It will tell you it can not do it now and ask if you want it to run at the next startup., click yes. The next time you turn the computer on it will run the check disk and depending on how large the drive is it may take a while. I generally do it before I go to bed and let it run while I am asleep and not in need of the computer. I have done it on one of my 500 gig drives and it took hours.