I tried that and it did not work. The paid functions are still grayed out.
There are three possibilities here:
1) The QT 7 Pro is not activated. In this case, the registration window will not display the QT logo with the word "Pro" superimposed on it, the phrase "QuickTime 7 Pro" will not be displayed below the "Registration Code:" entry, and the "Buy" button will not disappear. (I.e., I assume your version should look something like this if the code is accepted...)
2) You don't have a movie clip loaded. Unless you load a movie, most of the QT 7 Pro features will be grayed out since their functions are often contextual and, therefore, dependent on the data loaded. Additionally, the file loaded must be QT compression and/or edit compatible. For instance, if you try to trim an MPEG-1 video, the associated controls/options are grayed out because QT recognizes that this compression format is not editable at the frame level.
3) Your QT 7 Player application is corrupted/broken for some reason. In this case you would likely have to "extract" a copy of the player and replace the app in your Applications folder. However, this is a very rare chance of happening.
So, at this point you must determine which specific problem you have.
