Operation in progress.. Exception in Gtk# callback delegate Note: Applications can use GLib.ExceptionManager.UnhandledException to handle the exception. System.NullReferenceException: Object reference not set to an instance of an object at T.UK.pD () [0x000e2] in :0 at T.UK.mI (System.Object ) [0x00007] in :0 at T.QE.PE (System.Object ) [0x0004e] in :0 at T.AM.Jr (System.Object ) [0x0067b] in :0 at N.lE.uu (System.Object ) [0x000d7] in <3fc0374e94614ae4a23f0bc27fb60f20>:0 at T.TO.Xo (N.iM ) [0x0008e] in :0 at N.Jf.QG (N.iM ) [0x00063] in <3fc0374e94614ae4a23f0bc27fb60f20>:0 at N.Jf+JTx.oe (N.JJ ) [0x0019e] in <3fc0374e94614ae4a23f0bc27fb60f20>:0 at N.Jf.QW (N.JJ ) [0x0005c] in <3fc0374e94614ae4a23f0bc27fb60f20>:0 at P.xv.t (System.Object , System.EventArgs ) [0x00152] in :0 at T.Qf.Qw () [0x00062] in :0 at T.AG.z (System.Action ) [0x0000c] in :0 at T.Qf.Qd () [0x00000] in :0 at T.Qf.Qk () [0x00092] in :0 at T.QE+JbI.vg (System.Object , System.EventArgs ) [0x00000] in :0 at Gtk.Application+InvokeCB.Invoke () [0x00000] in <7a41aae9f05e45b7b5a8cedfab67f8ff>:0 at GLib.Timeout+TimeoutProxy.Handler (System.IntPtr data) [0x0003c] in <5a439e0caae7469886e7119d9f6bc621>:0 at GLib.ExceptionManager.RaiseUnhandledException (System.Exception e, System.Boolean is_terminal) [0x00000] in <5a439e0caae7469886e7119d9f6bc621>:0 at GLib.Timeout+TimeoutProxy.Handler (System.IntPtr data) [0x00000] in <5a439e0caae7469886e7119d9f6bc621>:0 at Gtk.Application.gtk_main () [0x00000] in <7a41aae9f05e45b7b5a8cedfab67f8ff>:0 at Gtk.Application.Run () [0x00000] in <7a41aae9f05e45b7b5a8cedfab67f8ff>:0 at T.TO.XZ (System.Action ) [0x00000] in :0 at N.Jf.j (System.String , System.Func`1[TResult] , System.Func`2[T,TResult] , System.Action ) [0x00000] in <3fc0374e94614ae4a23f0bc27fb60f20>:0 at O.Ej.wn (i.bv ) [0x00000] in <60c4dff8e83945dc85499c12db4fc9e7>:0 at i.bv.q (i.bC , System.Action`1[T] ) [0x00000] in :0 at O.Ej.E () [0x00000] in <60c4dff8e83945dc85499c12db4fc9e7>:0 at P.NY.YH (i.PK ) [0x00000] in :0 at i.Pr.x (System.String , i.PK ) [0x00000] in :0 at d.ng.kC (System.String[] ) [0x00000] in <85007e92538d4488a31cbbc57de973df>:0 at d.ng+JAN.xQ () [0x00000] in <85007e92538d4488a31cbbc57de973df>:0 at N.Jf.XG (System.Action ) [0x00000] in <3fc0374e94614ae4a23f0bc27fb60f20>:0 at T.TO.XG (System.Action ) [0x00000] in :0 at N.Jf.QK (System.Action ) [0x00000] in <3fc0374e94614ae4a23f0bc27fb60f20>:0 at d.ng.kk (System.String[] ) [0x00000] in <85007e92538d4488a31cbbc57de973df>:0 Operation in progress.. Exception in Gtk# callback delegate Note: Applications can use GLib.ExceptionManager.UnhandledException to handle the exception. System.NullReferenceException: Object reference not set to an instance of an object at T.UK.pD () [0x000e2] in :0 at T.UK.mI (System.Object ) [0x00007] in :0 at T.QE.PE (System.Object ) [0x0004e] in :0 at T.AM.Jr (System.Object ) [0x0067b] in :0 at N.lE.uu (System.Object ) [0x000d7] in <3fc0374e94614ae4a23f0bc27fb60f20>:0 at T.TO.Xo (N.iM ) [0x0008e] in :0 at N.Jf.QG (N.iM ) [0x00063] in <3fc0374e94614ae4a23f0bc27fb60f20>:0 at N.Jf+JTx.oe (N.JJ ) [0x0019e] in <3fc0374e94614ae4a23f0bc27fb60f20>:0 at N.Jf.QW (N.JJ ) [0x0005c] in <3fc0374e94614ae4a23f0bc27fb60f20>:0 at P.xv.t (System.Object , System.EventArgs ) [0x00152] in :0 at T.Qf.Qw () [0x00062] in :0 at T.AG.z (System.Action ) [0x0000c] in :0 at T.Qf.Qd () [0x00000] in :0 at T.Qf.Qk () [0x00092] in :0 at T.QE+JbI.vg (System.Object , System.EventArgs ) [0x00000] in :0 at Gtk.Application+InvokeCB.Invoke () [0x00000] in <7a41aae9f05e45b7b5a8cedfab67f8ff>:0 at GLib.Timeout+TimeoutProxy.Handler (System.IntPtr data) [0x0003c] in <5a439e0caae7469886e7119d9f6bc621>:0 at GLib.ExceptionManager.RaiseUnhandledException (System.Exception e, System.Boolean is_terminal) [0x00000] in <5a439e0caae7469886e7119d9f6bc621>:0 at GLib.Timeout+TimeoutProxy.Handler (System.IntPtr data) [0x00000] in <5a439e0caae7469886e7119d9f6bc621>:0 at Gtk.Application.gtk_main () [0x00000] in <7a41aae9f05e45b7b5a8cedfab67f8ff>:0 at Gtk.Application.Run () [0x00000] in <7a41aae9f05e45b7b5a8cedfab67f8ff>:0 at T.TO.XZ (System.Action ) [0x00000] in :0 at N.Jf.j (System.String , System.Func`1[TResult] , System.Func`2[T,TResult] , System.Action ) [0x00000] in <3fc0374e94614ae4a23f0bc27fb60f20>:0 at O.Ej.wn (i.bv ) [0x00000] in <60c4dff8e83945dc85499c12db4fc9e7>:0 at i.bv.q (i.bC , System.Action`1[T] ) [0x00000] in :0 at O.Ej.E () [0x00000] in <60c4dff8e83945dc85499c12db4fc9e7>:0 at P.NY.YH (i.PK ) [0x00000] in :0 at i.Pr.x (System.String , i.PK ) [0x00000] in :0 at d.ng.kC (System.String[] ) [0x00000] in <85007e92538d4488a31cbbc57de973df>:0 at d.ng+JAN.xQ () [0x00000] in <85007e92538d4488a31cbbc57de973df>:0 at N.Jf.XG (System.Action ) [0x00000] in <3fc0374e94614ae4a23f0bc27fb60f20>:0 at T.TO.XG (System.Action ) [0x00000] in :0 at N.Jf.QK (System.Action ) [0x00000] in <3fc0374e94614ae4a23f0bc27fb60f20>:0 at d.ng.kk (System.String[] ) [0x00000] in <85007e92538d4488a31cbbc57de973df>:0