kdelive craches on startup

I have just installed kdenlive on my fedora 8 system from rpms.
It starts, asks me my default video format, which is NTSC, then it crashes with signal 11 (SIGSEGV).

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Using host libthread_db library "/lib/libthread_db.so.1".
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[Thread debugging using libthread_db enabled]
[New Thread -1209108784 (LWP 10096)]
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[KCrash handler]
#6 0x0011dd76 in mlt_properties_set () from /usr/lib/libmlt.so.0.2.2
#7 0x0037eb60 in _dl_lookup_symbol_x () from /lib/ld-linux.so.2
#8 0x00383038 in _dl_fixup () from /lib/ld-linux.so.2
#9 0x003888c0 in _dl_runtime_resolve () from /lib/ld-linux.so.2
#10 0x00141408 in Mlt::Properties::set () from /usr/lib/libmlt++.so.0.2.2
#11 0x0812ff03 in ?? ()
#12 0x08849f40 in ?? ()
#13 0x081d857c in ?? ()
#14 0x0881fd40 in ?? ()
#15 0xbfe9eec0 in ?? ()
#16 0x000000ac in ?? ()
#17 0xbfe9ec54 in ?? ()
#18 0x088c80f4 in ?? ()
#19 0x087dc308 in ?? ()
#20 0x08849b88 in ?? ()
#21 0x08849f40 in ?? ()
#22 0x08849b88 in ?? ()
#23 0x088c8098 in ?? ()
#24 0x087dc330 in ?? ()
#25 0x0885df08 in ?? ()
#26 0xbfe9ec38 in ?? ()
#27 0x0813255a in ?? ()
#28 0x088c8098 in ?? ()
#29 0xbfe9ecc4 in ?? ()
#30 0x08787ee0 in ?? ()
#31 0x0885df08 in ?? ()
#32 0x088b0338 in ?? ()
#33 0xbfe9ecc4 in ?? ()
#34 0xbfe9ec68 in ?? ()
#35 0xbfe9ec54 in ?? ()
#36 0xbfe9ecc4 in ?? ()
#37 0x087dc308 in ?? ()
#38 0xbfe9ec68 in ?? ()
#39 0x0813263b in ?? ()
#40 0x087dc308 in ?? ()
#41 0xbfe9ecc4 in ?? ()
#42 0xbfe9ec68 in ?? ()
#43 0x050a53e4 in KURL::KURL () from /usr/lib/libkdecore.so.4
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

When I start kdenlive from the command line, I get this:

$ kdenlive
kbuildsycoca running...
KCrash: Application 'kdenlive' crashing...

I've googled the different messages to no avail.
I don't know where to go from here.
Can anybody help me?