This error, and much others as "debugger not working" only appears on ubuntu. now I'm using opeSUSE and all my problems are solved. -- View this message in context: http://mono.1490590.n4.nabble.com/How-can-I-restore-an-deleted-MainWindow-tp2124955p2195396.html Sent from the Mono - Gtk# mailing list archive at Nabble.com.