I'm experiencing the same problem. Just to add some more information:
advocatux@holmes:~$ calibre-debug Traceback (most recent call last): File "/usr/bin/calibre-debug", line 19, in <module> sys.exit(main()) File "/usr/lib/calibre/calibre/debug.py", line 248, in main ipython() File "/usr/lib/calibre/calibre/__init__.py", line 714, in ipython ipython(user_ns=user_ns) File "/usr/lib/calibre/calibre/utils/ipython.py", line 87, in ipython return old_ipython(user_ns=user_ns) File "/usr/lib/calibre/calibre/utils/ipython.py", line 76, in old_ipython from IPython.Shell import IPShellEmbed ImportError: No module named IPython.Shell -- System Information: Debian Release: wheezy/sid APT prefers testing APT policy: (500, 'testing') Architecture: i386 (i686) Kernel: Linux 3.2.0-2-686-pae (SMP w/2 CPU cores) Locale: LANG=es_ES.UTF-8, LC_CTYPE=es_ES.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Versions of packages calibre depends on: ii calibre-bin 0.8.49+dfsg-0.1 ii fonts-liberation [ttf-liberation] 1.07.2-2 ii imagemagick 8:6.7.4.0-5 ii poppler-utils 0.16.7-3 ii python-beautifulsoup 3.2.0-2 ii python-chardet 2.0.1-2 ii python-cherrypy3 3.2.2-2 ii python-cssutils 0.9.9-1 ii python-dateutil 1.5-1 ii python-dbus 0.84.0-3 ii python-feedparser 5.0.1-1 ii python-imaging 1.1.7-4 ii python-lxml 2.3.2-1 ii python-mechanize 1:0.2.5-2 ii python-pkg-resources 0.6.24-1 ii python-pyparsing 1.5.2-2 ii python-qt4 4.9.1-3 ii python-routes 1.13-1 ii python2.7 2.7.3~rc2-2.1 ii ttf-liberation 1.07.2-2 ii xdg-utils 1.1.0~rc1+git20111210-6 Versions of packages calibre recommends: ii python-dnspython 1.9.4-1 calibre suggests no packages. -- no debconf information -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org