i have the same issue (aptitude 0.6.3) aptitude
(aptitude:12666): libglade-WARNING **: could not look up stock id '_Install/Remove Packages' (aptitude:12666): libglade-WARNING **: could not look up stock id '_Update Package List' (aptitude:12666): libglade-WARNING **: could not look up stock id 'Mark Up_gradable' (aptitude:12666): libglade-WARNING **: could not look up stock id '_Forget New Packages' (aptitude:12666): libglade-WARNING **: could not look up stock id 'Canc_el Pending Actions' (aptitude:12666): libglade-WARNING **: could not look up stock id 'C_lean Package Cache' (aptitude:12666): libglade-WARNING **: could not look up stock id 'Clean _Obsolete Files' (aptitude:12666): libglade-WARNING **: could not look up stock id '_Reload Package Cache' (aptitude:12666): libglade-WARNING **: could not look up stock id '_Play Minesweeper' (aptitude:12666): libglade-WARNING **: could not look up stock id '_Become Root' (aptitude:12666): libglade-WARNING **: could not look up stock id '_Quit' (aptitude:12666): libglade-WARNING **: could not look up stock id '_Edit Columns...' (aptitude:12666): libglade-WARNING **: could not look up stock id 'View Apt _Errors' (aptitude:12666): libglade-WARNING **: could not look up stock id 'Find _Dependency Chains' (aptitude:12666): libglade-WARNING **: could not look up stock id 'Install' (aptitude:12666): libglade-WARNING **: could not look up stock id 'Remove' (aptitude:12666): libglade-WARNING **: could not look up stock id 'Purge' (aptitude:12666): libglade-WARNING **: could not look up stock id 'Keep' (aptitude:12666): libglade-WARNING **: could not look up stock id 'Hold' (aptitude:12666): libglade-WARNING **: could not look up stock id '_Install/Remove Packages' (aptitude:12666): libglade-WARNING **: could not look up stock id '_Update Package List' (aptitude:12666): libglade-WARNING **: could not look up stock id 'Mark Up_gradable' (aptitude:12666): libglade-WARNING **: could not look up stock id '_Forget New Packages' (aptitude:12666): libglade-WARNING **: could not look up stock id 'Canc_el Pending Actions' (aptitude:12666): libglade-WARNING **: could not look up stock id 'C_lean Package Cache' (aptitude:12666): libglade-WARNING **: could not look up stock id 'Clean _Obsolete Files' (aptitude:12666): libglade-WARNING **: could not look up stock id '_Reload Package Cache' (aptitude:12666): libglade-WARNING **: could not look up stock id '_Play Minesweeper' (aptitude:12666): libglade-WARNING **: could not look up stock id '_Become Root' (aptitude:12666): libglade-WARNING **: could not look up stock id '_Quit' (aptitude:12666): libglade-WARNING **: could not look up stock id '_Edit Columns...' (aptitude:12666): libglade-WARNING **: could not look up stock id 'View Apt _Errors' (aptitude:12666): libglade-WARNING **: could not look up stock id 'Find _Dependency Chains' ** Gtk:ERROR:/gtk+2.0-2.21.5/gtk/gtktextbtree.c:4746:gtk_text_line_destroy: assertion failed: (view != NULL) Aborted
