I upgraded to Kdenlive 0.9.2, hoping to fix some bugs when importing a large amount of clips. On the previous versions, I could only import a few clips at a time. Whenever I try to even import one clip 0.9.2, Kdenlive closes without warning. Out of 10 times that it closes on import, it has done it all 10 times.

I am similarly experiencing this, while running 0.9.2 on Quantal.

tarek : )

Can you make sure that you don't have several versions of MLT installed?

Also, try MLT's command line player from a terminal:

melt myclip.mpg

Does it work