My older laptop uses Vista and I use Fusion 9. I have a new laptop that uses Microsoft 7 and I loaded Fusion 9 on it. I put my website on a thumbdrive and tried to open it on the new computer and it give me an error message that reads "The file was created using a later version on NetObject Fusion and cannot be opened. Please upgrade to the latest version of NetObject Fusion."

The older laptop had an older version of Fusion, but was upgraded with version 9 several years ago. What can be the problem?