Hi There. I just downloaded the Trial Version of Lightroom 4 for mac. I imported photos and they in a catalogue. When i select a photo then click the "Develop" tab I get a message that says "no image selected". I have watched a few different videos and tried multiple things but It seems that the develop module is not available on the Lightroom Trial. However, I have read on these forums that the tutorial does not block any features that the full version does not have. Can anyone explain what I might be doing wrong?