I got this same message before. This happened when I re-installed the version 2.5 update without re-installing the full 2.5 version first. Can you get into the gigastudio program at all now? If Gigastudio itself is not functioning you probably have the same problem I did. If you do, use the Tascam clean uninstall procedure and make sure you are loading the full version of the software before you load the update. Hope that helps.