Martin Drautzburg <martin.drautzburg at web.de> asked:

> ScheduledControllers is nil in my system. How can that be ?
Ok, I just found out that in a fresh Squeak 3.4, the value of this
global variable is nil. It is assigned an instance of ControlManager
when you *enter* an MVC project the first time. Seemingly you
never created and entered an MVC project in your image -
is that right?

Once again: You cannot open a FormEditor in a morphic project.
When  ScheduledControllers has an appropriate value, you will
not run into the debugger, but nothing will happen.

-- Boris