I ran into this problem a while back, where if you tried to create a time lapse video, the sliders would immediately clap together (to make a 0-minute clip).
Here's the original posting (from someone else).
The issue appeared be that I was at my storage quota. Unfortunately, the UI doesn't really do much to bring this to your attention -- it just makes it impossible to save a clip.
I apologize for my late response and thank you for all of your patience while waiting for a reply. I definitely understand how frustrating your situation must be, and I wanted to make sure that your concern was acknowledged. Do you still need help with this issue? I know that there's been a delay in response since you posted.