I have just created my first video with three clips and two transitions. I rendered it to an AVI file and now when I play it back, it plays the first clip just fine, then it comes to the transition and freezes the video for 30 seconds, then it plays the transition and straight into the next clip. The other transition playback the very same.
The first transition is slide, the second is a wipe.
I'm not sure what is going wrong here.