I am not sure I understand the reported bug but mayavi2 will not install on Hardy for me any more (it used to till a few days ago). I will appreciate a solution... (I deeply appreciate the introduction of such a variety of scientific packages, especially python based - excellent work!!!) laptop:~$ sudo aptitude install mayavi2 Reading package lists... Done Building dependency tree Reading state information... Done Reading extended state information Initialising package states... Done Building tag database... Done The following NEW packages will be automatically installed: python-enthought-traits python-enthought-traits-ui python-vtk The following NEW packages will be installed: mayavi2 python-enthought-traits python-enthought-traits-ui python-vtk 0 packages upgraded, 4 newly installed, 0 to remove and 0 not upgraded. Need to get 0B/17.8MB of archives. After unpacking 43.3MB will be used. Do you want to continue? [Y/n/?] Writing extended state information... Done Selecting previously deselected package python-enthought-traits. (Reading database ... 191405 files and directories currently installed.) Unpacking python-enthought-traits (from .../python-enthought-traits_2.0.1b1-2_amd64.deb) ... Selecting previously deselected package python-enthought-traits-ui. Unpacking python-enthought-traits-ui (from .../python-enthought-traits-ui_2.0.1b1-3_all.deb) ... Selecting previously deselected package python-vtk. Unpacking python-vtk (from .../python-vtk_5.0.3-1ubuntu1_amd64.deb) ... Selecting previously deselected package mayavi2. Unpacking mayavi2 (from .../mayavi2_2.0.2a1-4ubuntu1_amd64.deb) ... Setting up python-enthought-traits (2.0.1b1-2) ... Setting up python-enthought-traits-ui (2.0.1b1-3) ... Setting up python-vtk (5.0.3-1ubuntu1) ... Can't list /usr/lib/python2.5/site-packages/vtk Can't list /usr/lib/python2.5/site-packages/vtk Setting up mayavi2 (2.0.2a1-4ubuntu1) ... file does not exist: /usr/lib/python2.5/site-packages/enthought.debug-2.0.1b1-nspkg.pth file does not exist: /usr/lib/python2.5/site-packages/enthought.envisage-2.0.1b1-nspkg.pth file does not exist: /usr/lib/python2.5/site-packages/enthought.logger-2.0.1b1-nspkg.pth file does not exist: /usr/lib/python2.5/site-packages/enthought.mayavi-2.0.2a1-nspkg.pth file does not exist: /usr/lib/python2.5/site-packages/enthought.persistence-2.0.1b2-nspkg.pth file does not exist: /usr/lib/python2.5/site-packages/enthought.plugins.debug-2.0.1b1-nspkg.pth file does not exist: /usr/lib/python2.5/site-packages/enthought.plugins.python_shell-2.0.1b1-nspkg.pth file does not exist: /usr/lib/python2.5/site-packages/enthought.plugins.refresh_code-2.0.1b1-nspkg.pth file does not exist: /usr/lib/python2.5/site-packages/enthought.plugins.text_editor-2.0.1b1-nspkg.pth file does not exist: /usr/lib/python2.5/site-packages/enthought.tvtk-2.0.0b2-nspkg.pth pycentral: pycentral pkginstall: error byte-compiling files (731) pycentral pkginstall: error byte-compiling files (731) dpkg: error processing mayavi2 (--configure): subprocess post-installation script returned error exit status 1 Processing triggers for libc6 ... ldconfig deferred processing now taking place Errors were encountered while processing: mayavi2 E: Sub-process /usr/bin/dpkg returned an error code (1) A package failed to install. Trying to recover: Setting up mayavi2 (2.0.2a1-4ubuntu1) ... file does not exist: /usr/lib/python2.5/site-packages/enthought.debug-2.0.1b1-nspkg.pth file does not exist: /usr/lib/python2.5/site-packages/enthought.envisage-2.0.1b1-nspkg.pth file does not exist: /usr/lib/python2.5/site-packages/enthought.logger-2.0.1b1-nspkg.pth file does not exist: /usr/lib/python2.5/site-packages/enthought.mayavi-2.0.2a1-nspkg.pth file does not exist: /usr/lib/python2.5/site-packages/enthought.persistence-2.0.1b2-nspkg.pth file does not exist: /usr/lib/python2.5/site-packages/enthought.plugins.debug-2.0.1b1-nspkg.pth file does not exist: /usr/lib/python2.5/site-packages/enthought.plugins.python_shell-2.0.1b1-nspkg.pth file does not exist: /usr/lib/python2.5/site-packages/enthought.plugins.refresh_code-2.0.1b1-nspkg.pth file does not exist: /usr/lib/python2.5/site-packages/enthought.plugins.text_editor-2.0.1b1-nspkg.pth file does not exist: /usr/lib/python2.5/site-packages/enthought.tvtk-2.0.0b2-nspkg.pth pycentral: pycentral pkginstall: error byte-compiling files (731) pycentral pkginstall: error byte-compiling files (731) dpkg: error processing mayavi2 (--configure): subprocess post-installation script returned error exit status 1 Errors were encountered while processing: mayavi2 Reading package lists... Done Building dependency tree Reading state information... Done Reading extended state information Initialising package states... Done Writing extended state information... Done Building tag database... Done