Hello,
I want to edit a project from the version 0.7.1 in Kdenlive 0.7.5. (with only one video clip two titles and a color clip).
After the conversion the clip monitor shows only a huge "Invalid".
When rendering it is the same: no sound and no video, only "invalid".
In the project tree I can reload the clip. Doing that the clip monitor shows the right video and plays the sound.
But the project monitor still does not plays the sound and shows only "invalid".
After rendering it is the same.
When i insert the "reloaded" clip in the timeline, this time, it is showed right, and the sound is played.
So I have a strip in the timeline played right, and another false, but both are refering to the same original clip!
How can I fix this?

Well... maybe I posted too fast.
I edited the .kdenlive file and corrected it.
The problem was that I changed the directory path of the clips / project.
During the conversion to 0.7.5 i got a window asking me for the new clip path and indicated the right one.
Nevertheless in the .kdenlive file i found merely occurrences of the old path for the problematic clip.
See attachement, file after the conversion: old path is
/home/thomas/videofactory/chevaliers/00003.avi
new path is
/home/thomas/NAS/videofactory/2009-01_chevaliers/00003.avi