gstreamer not working after upgrade to 1.8.0

[Dani]

Hi everyone,
after working with Gstreamer 1.6.3 version, I decided to upgrade to the 
latest stable release 1.8.0.
What has happened is that the projects that used to run with the older 
version are not working anymore.
This is the log I get after trying to run the projects:

    ** (gst-plugin-scanner:5069): CRITICAL **: Couldn't g_module_open
    libpython. Reason: /usr/lib/libpython2.7.so: cannot open shared
    object file: No such file or directory

    (gst-plugin-scanner:5069): GLib-GObject-WARNING **: cannot register
    existing type 'GstRtpH265Depay'

    (gst-plugin-scanner:5069): GLib-CRITICAL **: g_once_init_leave:
    assertion 'result != 0' failed

    (gst-plugin-scanner:5069): GStreamer-CRITICAL **:
    gst_element_register: assertion 'g_type_is_a (type,
    GST_TYPE_ELEMENT)' failed

    (gst-plugin-scanner:5069): GLib-GObject-WARNING **: cannot register
    existing type 'GstLiveAdder'

    (gst-plugin-scanner:5069): GLib-CRITICAL **: g_once_init_leave:
    assertion 'result != 0' failed

    (gst-plugin-scanner:5069): GStreamer-CRITICAL **:
    gst_element_register: assertion 'g_type_is_a (type,
    GST_TYPE_ELEMENT)' failed

    (gst-plugin-scanner:5069): GLib-GObject-WARNING **: cannot register
    existing type 'GstHLSDemux'

    (gst-plugin-scanner:5069): GLib-CRITICAL **: g_once_init_leave:
    assertion 'result != 0' failed

    (gst-plugin-scanner:5069): GStreamer-CRITICAL **:
    gst_element_register: assertion 'g_type_is_a (type,
    GST_TYPE_ELEMENT)' failed

    ** (gst-plugin-scanner:5069): CRITICAL **: Couldn't g_module_open
    libpython. Reason: /usr/lib/libpython2.7.so: cannot open shared
    object file: No such file or directory

Moreover if I try to run gst-inspect-1.0 autovideosink for example 
(after export LD_LIBRARY_PATH=/usr/lib), before getting the info I have 
this returned:

    ** (gst-plugin-scanner:5127): CRITICAL **: Couldn't g_module_open
    libpython. Reason: /usr/lib/libpython2.7.so: cannot open shared
    object file: No such file or directory

    (gst-plugin-scanner:5127): GLib-GObject-WARNING **: cannot register
    existing type 'GstRtpH265Depay'

    (gst-plugin-scanner:5127): GLib-CRITICAL **: g_once_init_leave:
    assertion 'result != 0' failed

    (gst-plugin-scanner:5127): GStreamer-CRITICAL **:
    gst_element_register: assertion 'g_type_is_a (type,
    GST_TYPE_ELEMENT)' failed

    (gst-plugin-scanner:5127): GLib-GObject-WARNING **: cannot register
    existing type 'GstLiveAdder'

    (gst-plugin-scanner:5127): GLib-CRITICAL **: g_once_init_leave:
    assertion 'result != 0' failed

    (gst-plugin-scanner:5127): GStreamer-CRITICAL **:
    gst_element_register: assertion 'g_type_is_a (type,
    GST_TYPE_ELEMENT)' failed

    (gst-plugin-scanner:5127): GLib-GObject-WARNING **: cannot register
    existing type 'GstHLSDemux'

    (gst-plugin-scanner:5127): GLib-CRITICAL **: g_once_init_leave:
    assertion 'result != 0' failed

    (gst-plugin-scanner:5127): GStreamer-CRITICAL **:
    gst_element_register: assertion 'g_type_is_a (type,
    GST_TYPE_ELEMENT)' failed



My OS is Ubuntu 14.04 64b and gstreamer has always been installed with 
prefix=/usr, specifically what I've installed is: gstreamer, base, good, 
ugly, bad, libav, rtsp-server and python. I am using Eclipse for developing.

Thanks for your help

Dani


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