I setup a fedora 13 box tonight (nice, very easy!) and installed jhbuild (also easy!). However, when I run sugar and launch the calculate activity, I get this error in my console (and calculate never launches): <div style="margin-left: 40px;"> Warning: unknown distro version, automatic fallback to rawhide. 1282604210.8936541 STARTUP: Starting the shell Window manager warning: Could not parse font description "(null)" from GConf key /apps/metacity/general/titlebar_font Window manager warning: 0 stored in GConf key /apps/metacity/general/num_workspaces is out of range 1 to 36 ** metacity:ERROR:core/prefs.c:2532:meta_prefs_get_workspace_name: assertion failed: (workspace_names[i] != NULL) </div> Any suggestions?