Nick,
You should not see this situation if you are using one of the Finale template files. I would suggest you also review the ReadMe file. This explains why there is now only the single Library file. If you use one of the template files, the Library is already loaded into the document. As for installing/reinstalling, you really only need to copy/paste files to their correct locations. Let me know if this helps to clarify things. If you have any additional questions please let me know.
You should not see this situation if you are using one of the Finale template files. I would suggest you also review the ReadMe file. This explains why there is now only the single Library file. If you use one of the template files, the Library is already loaded into the document. As for installing/reinstalling, you really only need to copy/paste files to their correct locations. Let me know if this helps to clarify things. If you have any additional questions please let me know.