Hi, I forwarded this upstream a while ago without any response. Is gcompris still actively developed? https://bugzilla.gnome.org/show_bug.cgi?id=747949
Basically, replace the 0.10 build dependencies with 1.0. Then make things compile and work again. See this small porting guide here http://cgit.freedesktop.org/gstreamer/gstreamer/tree/docs/random/porting-to-1.0.txt If you have any further questions please ask :) If you can point me to the code that uses gstreamer, I can also take a short look.