I just purchased "Office for Mac - Home 2011. It downloaded on my desktop but it did not make the Neo Office operational. I had just upgraded my software to MacOSX 10.9. It should work but I still get a warning on my Neo Office. What can I do now?

I just purchased "Office for Mac - Home 2011. It downloaded on my desktop but it did not make the Neo Office operational. I had just upgraded my software to MacOSX 10.9. It should work but I still get a warning on my Neo Office. What can I do now?