Preview problem

Hey all, I just want to say that when editing in kdenlive, if I play the preview so that I can see were I'm at and add title clips and for whatever reason, the preview is bugged it played a certain part of the video, usually a peice near the end, no matter were I am, so I can't see what I'm doing when editing. So its virtually impossible to edit like this.
I don't know if this helps, but when running in terminal, it says a lot of things that don't look right, so I will copy the whole thing.
Here it is :
Does anyone know whats wrong?


Nobody has any ideas? Its unusable like this.

I figured it out, it seems to be a problem with the .ogv format, that my screen recorder records in. I gave the clip a transcode and now it works.