Kdenlive crash on startup : X library problem ?

Hi all,

I've been trying to install kdenlive for the past few days, but kdenlive systematically crashes on launch.
I'm running Gentoo and I've installed the following ebuilds :
latest ffmpeg from "ffmpeg-svn", version 20071223. Compiled with mainly those flags : x264, a52, aac, X, sdl, swscaler, theora, encode, xvid.
mlt-0.2.4-r1
mlt++ (i can't compile mlt with ffmpeg use flag as it breaks while compiling. I can use theora and xine use flags.
kdenlive is the version 0.5 release 1825 from kdenlive-svn
xorg-server version 1.3.0.0-r5 compiled with sdl use flag (and other flags of course, but not relevant to me for this current problem).

Reading the forums here, I catch that to help me understand what happens :
LD_DEBUG=libs kdenlive

Quote:

(... I didn't put here the beginning of the log which seems ok...)

kdenlive: -------- INIT SCENE LIST ------_
kdenlive:



kdenlive:
kdenlive: WARNING: ////// RENDER, SET SCENE LIST
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XMissingExtension (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XMissingExtension (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XextAddDisplay (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XextAddDisplay (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XextCreateExtension (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XextCreateExtension (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XextDestroyExtension (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XextDestroyExtension (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XextFindDisplay (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XextFindDisplay (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XextRemoveDisplay (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XextRemoveDisplay (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XSetExtensionErrorHandler (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XSetExtensionErrorHandler (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XShmAttach (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XShmAttach (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XShmDetach (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XShmDetach (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XShmPutImage (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XShmPutImage (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XShmCreateImage (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XShmCreateImage (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XShmQueryExtension (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XShmQueryExtension (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XRRQueryVersion (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XRRQueryVersion (fatal)
11476: /usr/lib/libXext.so.6: error: symbol lookup error: undefined symbol: XRRQueryVersion (fatal)
11476: /usr/lib/libXext.so.6: error: symbol lookup error: undefined symbol: XRRQueryVersion (fatal)
11476: /usr/lib/libXrender.so.1: error: symbol lookup error: undefined symbol: XRRQueryVersion (fatal)
11476: /usr/lib/libXrender.so.1: error: symbol lookup error: undefined symbol: XRRQueryVersion (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XRRGetScreenInfo (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XRRGetScreenInfo (fatal)
11476: /usr/lib/libXext.so.6: error: symbol lookup error: undefined symbol: XRRGetScreenInfo (fatal)
11476: /usr/lib/libXext.so.6: error: symbol lookup error: undefined symbol: XRRGetScreenInfo (fatal)
11476: /usr/lib/libXrender.so.1: error: symbol lookup error: undefined symbol: XRRGetScreenInfo (fatal)
11476: /usr/lib/libXrender.so.1: error: symbol lookup error: undefined symbol: XRRGetScreenInfo (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XRRConfigCurrentConfiguration (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XRRConfigCurrentConfiguration (fatal)
11476: /usr/lib/libXext.so.6: error: symbol lookup error: undefined symbol: XRRConfigCurrentConfiguration (fatal)
11476: /usr/lib/libXext.so.6: error: symbol lookup error: undefined symbol: XRRConfigCurrentConfiguration (fatal)
11476: /usr/lib/libXrender.so.1: error: symbol lookup error: undefined symbol: XRRConfigCurrentConfiguration (fatal)
11476: /usr/lib/libXrender.so.1: error: symbol lookup error: undefined symbol: XRRConfigCurrentConfiguration (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XRRConfigSizes (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XRRConfigSizes (fatal)
11476: /usr/lib/libXext.so.6: error: symbol lookup error: undefined symbol: XRRConfigSizes (fatal)
11476: /usr/lib/libXext.so.6: error: symbol lookup error: undefined symbol: XRRConfigSizes (fatal)
11476: /usr/lib/libXrender.so.1: error: symbol lookup error: undefined symbol: XRRConfigSizes (fatal)
11476: /usr/lib/libXrender.so.1: error: symbol lookup error: undefined symbol: XRRConfigSizes (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XRRSetScreenConfig (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XRRSetScreenConfig (fatal)
11476: /usr/lib/libXext.so.6: error: symbol lookup error: undefined symbol: XRRSetScreenConfig (fatal)
11476: /usr/lib/libXext.so.6: error: symbol lookup error: undefined symbol: XRRSetScreenConfig (fatal)
11476: /usr/lib/libXrender.so.1: error: symbol lookup error: undefined symbol: XRRSetScreenConfig (fatal)
11476: /usr/lib/libXrender.so.1: error: symbol lookup error: undefined symbol: XRRSetScreenConfig (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XRRFreeScreenConfigInfo (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XRRFreeScreenConfigInfo (fatal)
11476: /usr/lib/libXext.so.6: error: symbol lookup error: undefined symbol: XRRFreeScreenConfigInfo (fatal)
11476: /usr/lib/libXext.so.6: error: symbol lookup error: undefined symbol: XRRFreeScreenConfigInfo (fatal)
11476: /usr/lib/libXrender.so.1: error: symbol lookup error: undefined symbol: XRRFreeScreenConfigInfo (fatal)
11476: /usr/lib/libXrender.so.1: error: symbol lookup error: undefined symbol: XRRFreeScreenConfigInfo (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: DPMSQueryExtension (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: DPMSQueryExtension (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: DPMSInfo (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: DPMSInfo (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: DPMSEnable (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: DPMSEnable (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: DPMSDisable (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: DPMSDisable (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XMissingExtension (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XMissingExtension (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XextAddDisplay (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XextAddDisplay (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XextCreateExtension (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XextCreateExtension (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XextDestroyExtension (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XextDestroyExtension (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XextFindDisplay (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XextFindDisplay (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XextRemoveDisplay (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XextRemoveDisplay (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XSetExtensionErrorHandler (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XSetExtensionErrorHandler (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XShmAttach (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XShmAttach (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XShmDetach (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XShmDetach (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XShmPutImage (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XShmPutImage (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XShmCreateImage (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XShmCreateImage (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XShmQueryExtension (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XShmQueryExtension (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XRRQueryVersion (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XRRQueryVersion (fatal)
11476: /usr/lib/libXext.so.6: error: symbol lookup error: undefined symbol: XRRQueryVersion (fatal)
11476: /usr/lib/libXext.so.6: error: symbol lookup error: undefined symbol: XRRQueryVersion (fatal)
11476: /usr/lib/libXrender.so.1: error: symbol lookup error: undefined symbol: XRRQueryVersion (fatal)
11476: /usr/lib/libXrender.so.1: error: symbol lookup error: undefined symbol: XRRQueryVersion (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XRRGetScreenInfo (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XRRGetScreenInfo (fatal)
11476: /usr/lib/libXext.so.6: error: symbol lookup error: undefined symbol: XRRGetScreenInfo (fatal)
11476: /usr/lib/libXext.so.6: error: symbol lookup error: undefined symbol: XRRGetScreenInfo (fatal)
11476: /usr/lib/libXrender.so.1: error: symbol lookup error: undefined symbol: XRRGetScreenInfo (fatal)
11476: /usr/lib/libXrender.so.1: error: symbol lookup error: undefined symbol: XRRGetScreenInfo (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XRRConfigCurrentConfiguration (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XRRConfigCurrentConfiguration (fatal)
11476: /usr/lib/libXext.so.6: error: symbol lookup error: undefined symbol: XRRConfigCurrentConfiguration (fatal)
11476: /usr/lib/libXext.so.6: error: symbol lookup error: undefined symbol: XRRConfigCurrentConfiguration (fatal)
11476: /usr/lib/libXrender.so.1: error: symbol lookup error: undefined symbol: XRRConfigCurrentConfiguration (fatal)
11476: /usr/lib/libXrender.so.1: error: symbol lookup error: undefined symbol: XRRConfigCurrentConfiguration (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XRRConfigSizes (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XRRConfigSizes (fatal)
11476: /usr/lib/libXext.so.6: error: symbol lookup error: undefined symbol: XRRConfigSizes (fatal)
11476: /usr/lib/libXext.so.6: error: symbol lookup error: undefined symbol: XRRConfigSizes (fatal)
11476: /usr/lib/libXrender.so.1: error: symbol lookup error: undefined symbol: XRRConfigSizes (fatal)
11476: /usr/lib/libXrender.so.1: error: symbol lookup error: undefined symbol: XRRConfigSizes (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XRRSetScreenConfig (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XRRSetScreenConfig (fatal)
11476: /usr/lib/libXext.so.6: error: symbol lookup error: undefined symbol: XRRSetScreenConfig (fatal)
11476: /usr/lib/libXext.so.6: error: symbol lookup error: undefined symbol: XRRSetScreenConfig (fatal)
11476: /usr/lib/libXrender.so.1: error: symbol lookup error: undefined symbol: XRRSetScreenConfig (fatal)
11476: /usr/lib/libXrender.so.1: error: symbol lookup error: undefined symbol: XRRSetScreenConfig (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XRRFreeScreenConfigInfo (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: XRRFreeScreenConfigInfo (fatal)
11476: /usr/lib/libXext.so.6: error: symbol lookup error: undefined symbol: XRRFreeScreenConfigInfo (fatal)
11476: /usr/lib/libXext.so.6: error: symbol lookup error: undefined symbol: XRRFreeScreenConfigInfo (fatal)
11476: /usr/lib/libXrender.so.1: error: symbol lookup error: undefined symbol: XRRFreeScreenConfigInfo (fatal)
11476: /usr/lib/libXrender.so.1: error: symbol lookup error: undefined symbol: XRRFreeScreenConfigInfo (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: DPMSQueryExtension (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: DPMSQueryExtension (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: DPMSInfo (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: DPMSInfo (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: DPMSEnable (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: DPMSEnable (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: DPMSDisable (fatal)
11476: /usr/lib/libX11.so.6: error: symbol lookup error: undefined symbol: DPMSDisable (fatal)
KCrash: Application 'kdenlive' crashing...

So, it seems that my x server has a problem, but i don't understand how to solve it;

I've made also a post on gentoo forums : http://forums.gentoo.org/viewtopic-p-4866653.html#4866653

Thanks a lot for your help