The Toolkit looks at your entire dataset to see if it's compatible with all your modules. It works from a list of known applications. Sometimes, data will be left over from some DOS application. Sometimes it's data from some 3rd party product. Either way, the Toolkit will ignore that data. As mentioned above, the 'Active Data' function will provide more information. Namely, all of your applications and when they were last accessed. If you check the box on the error message, you won't see it again. You are running the latest Toolkit, so it is compatible with all current and past Adagio products. FYI, there is a compatibility chart provided on the Toolkit product page.