[ddouglass]

There is a version 3.0 and a Service Pack for it too as you had found earlier.
Since this happened after installing the Keywrite 2.10 maybe you need to try uninstalling Microstudio and it then just install Microstudio and see what happens.
The only other thing I can think of would be if you have Microstudio pointed to a folder with a large amount of files which would take quite a while for it to catalog them. Have you tried starting it and leaving the computer set for a while to see if it eventually comes up? I know that when I selected my folder with all my Hoster song (KMA) files, it took it well over an hour to catalog them. I have over 12,000 files in it.