i'm using the 14 day free trial. working with an imported site. I'm trying to figure out why the fade in function was lost. i see under windows that behavior is greyed out, not functional. Is this because I'm using the free trial or some other problem?
The trial version is a full version, the only limitation is the 30 day duration.
More than likely, you're in Live View. The new Live View Editor doesn't have the same functionality as Design View and a lot of options will be grayed out like that when you're in the wrong view.
If that's not it, it may be a code error is causing issues in DW.
Code errors can also cause issues like this in DW. As the program has progressed, it relies more and more on clean, valid code for many of the functions to work correctly. Make sure you are working with clean code by running the validatorat http://validator.w3.org/nu if switching to Design View isn't the issue.