B4J Question scene builder designer not found

[js1234]

I installed latest B4J v4.20 and if I click to edit layout1.fxml (open designer) I get this message:

______________
An error occured
Application not found
Make sure that JavaFX Scane builder is installed correctly
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?

 

[Erel]

Don't use FXML layouts for new projects. Use the internal designer instead.