kdenlive svn crashes a lot

today 29 june i have recompiled my kdenlive and mlt too and...

omg i can't use it .

with a lots of effects kdenlive crashes

tecnicolor--->crashes
but i mean a lots of video effects..

anyone has the sam problem ?

i have used with avi file.

some time there is this messange on console

KCrash: Application 'kdenlive' crashing...
Alarm clock

same crash here, but it appears when creating video thumbnails only

ps : MLT latest git (26 june) and kdenlive svn rev 3693 (on my ppa)

edit : and curiously it didn't appear everytime I tried to reproduce the crash ???

edit2 : unable to have a backtrace (I probably forgot some option in my package building), but I have this from command line :

"NEW: "tcolor"
: Fatal IO error 9 (Mauvais descripteur de fichier) on X server :0.0.
KCrash: Application 'kdenlive' crashing..."