If you still have your old Win machine, follow the exact path and make sure that your files are installed in the same directory on the new one. You may have to find the location of the app after double-clicking on one of the files. After the first one opens, the rest in the same directory should be fine.
Error message I receive is "incompatible version. What version do I have to upgrade to for it to work? I worry when I upgrade that it won't work with the people I work with that have different Finale Versions.