This class is the expression thrown, when signal autoconnection fails. This happens when you donot have the functions assigned in your callback section of the .glade file, present in your CIL assembly. You can rectify this exception by adding the corresponding function in your code, and recompiling the application.

Namespace: Glade
Assembly: glade-sharp (in glade-sharp.dll)
Assembly Versions: 2.12.0.0