Right. OBDefinitionPanel >> createCompletionController looks like this:

createCompletionController
        ^ (Optimist ifTrue: [OController] ifFalse: [ECController]) model: self

and Optimist is nil. I don't know what Optimist is meant to be. It's
certainly not a class variable of OBDefinitionPanel and friends.

frank

On 25 January 2013 19:09, Raymond Asselin <asselinraymond@videotron.ca> wrote:
> I just loaded OmniBrowser with Refactoring engine from the menu Help-> Extending the system
>
> Everything seems o.k. for the loading and installing
> But when I tried to change the name of the Class (in the Class template of Omnibrowser) I had an error style "Undefined object >> mustBeBooleanIn:
>
> This error does not appear if we don't load Omnibrowser and Refactoring engine.