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[zbi <zbzbzb1@xxxxxxx>]

*** This bug is a duplicate of bug 459940 ***
    https://bugs.launchpad.net/bugs/459940

I tried bzr branch lp:openshot/1.0
cd ~/1.0
python openshot/openshot.py

*** ERROR: MLT Python bindings failed to import ***
*** ERROR: MLT Python bindings failed to import ***
Exception in thread Thread-1:
Traceback (most recent call last):
  File "/usr/lib/python2.6/threading.py", line 525, in __bootstrap_inner
    self.run()
  File "/home/zbi/1.0/openshot/classes/thumbnail.py", line 174, in run
    mlt.Factory().init()
NameError: global name 'mlt' is not defined

I had to install python-mlt_1.0-3~karmic_i386.deb
Then I was able to start OpenShot by python openshot/openshot.py
But Exaile failed on the same error as above.So I had to remove python-mlt that also removed frei0r-plugins.
Than Exaile worked.

-- 
Installing from ppa kills video applications (frei0r-plugins)
https://bugs.launchpad.net/bugs/511099
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Status in OpenShot Video Editor: New

Bug description:
Xubuntu 9.10
Installing OpenShot 1.0.0 from ppa.
After installing OpenShot, Totem and Exaile stop working. The error from terminal: ERROR: Could not load classifier cascade /usr/share/opencv/haarcascades/haarcascade_frontalface_alt2.xml

I also found a solution how to repair Totem and Exaile:
http://www.insidesocal.com/click/2009/11/ubuntu-karmic-fail-pidgin-and.html

It is necessary to use these commands:
# sudo apt-get purge frei0r-plugins libcv1 libhighgui1 libcvaux1
# sudo apt-get install libcv1 libhighgui1 libcvaux1

This unfortunatelly unistalls OpenShot. So I can either have installed OpenShot and killed Totem and Exaile or have functional Totem and Exaile but not OpenShot installed.

This issue seems to be related to frei0r-plugins. When I wanted to unistall frei0r-plugins, it will also require to uninstall OpenShot.