The problem has been fixed upstream, but I don't think the "Fix committed" status applies to gtkmm2.4 (Ubuntu), yet. This is a serious ABI breakage and the gtkmm2.4 package should be upgraded to 2.18.2 before the final release of Karmic, if at all possible.
The problem has been fixed upstream, but I don't think the "Fix committed" status applies to gtkmm2.4 (Ubuntu), yet. This is a serious ABI breakage and the gtkmm2.4 package should be upgraded to 2.18.2 before the final release of Karmic, if at all possible.