Solved.
I installed calibre in custom directory /opt. Didn't know that I have to start it by
Code:
LD_LIBRARY_PATH=/opt/calibre/0.8.48/calibre/lib /opt/calibre/0.8.48/calibre/calibre
not
Code:
LD_LIBRARY_PATH=/opt/calibre/0.8.48/calibre/lib /opt/calibre/0.8.48/calibre/bin/calibre
Now everything works great