Your OS version is newer than your version of FileMaker. Any time you upgrade an OS, there's a chance that you will also need to upgrade some of your applications in order for them to work with the upgrade. That's always been true and for Windows as well as Mac.
He said a developer on this forum will know who to get my OS X 10.6.6 to upgrade to 8 even though it's not supposed to.
I don't recall seeing any discussions of such an approach here in this forum, but that could be a faulty memory on my part...
Most developers on here will just tell you:
1. Call FM technical support for an issue such as that
2. upgrade to the correct version or there is no reason to expect it to work
And I tend to lean towards option number 2, but believe me I FULLY understand the frustration of being unable to afford a particular software title you need. However, this is not the software's problem, or fault...even though it frustrates us to that point. The software is working perfectly, doing exactly as it was designed to do, and the manufacturer is consistantly updating and improving their product...exactly what we want them to do. So in the end my friend, you can't get upset with the software...and as far as cost I find FMP extremely reasonable in price for what it does. Try pricing something like Adobe products sometime...