If you are unable to open McIDAS-V or properly display images, we have written a list of steps to follow to try to get everything working properly. These steps are in the FAQ section of the McIDAS-V User's Guide, and can be found directly at the following link:
http://www.ssec.wisc.edu/mcidas/doc/mcv ... asicchecks
If you do not see anything in these checks that helps your problem, please check the General Questions or Bug Reports sections in the McIDAS-V forums, as another user may have already experienced your problem. If you are unable to find an answer to your problem, please post your question in the forums, and a member of the MUG Support Team will help you.