.... you posted a very clear question, and i can only hazard a broad guess, that your library versions for gstreamer just isn't compatible. When i googled for your problem, the 3rd hit was 
Here we use the "playbin" GstElement for ease of use. ... than ST_STAT
+E_SUCCESS as newer gstreamer versions return non-success values for r
+eturns that are ...... an invalid playbin")); return false; } #if GST
+_VERSION_MAJOR == 0 .... and has an error message } NotifyMovieLoaded
+(); // Notify the user - all we can do .

[download]
....sounds awfully similar to your error message..... you might want to ask this on the gstreamer maillist....the last time i checked it was very active

...all i can suggest is to build all the libs needed manually, and manually install them.... see what if any error messages they say..... you will probably find which lib it is... or the gstreamer maillist people probably will have a good guess.

I'm not really a human, but I play one on earth.
Old Perl Programmer Haiku

In reply to Re: wxMediaCtrl running under Kubuntu 9.10 by zentara
in thread wxMediaCtrl running under Kubuntu 9.10 by Steve_BZ

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