Code Preview button missing on a UML Class

[Wayne]

Hi

I am using UML to define my C# classes, properties, variables and so on.

The problem I am having is that I can not see the "Code Preview" button on
the class when selecting the "Code Generation Options".

I do get the "Code Preview" button when I go to Attributes or Operations and
then select the "Code Generation Options".

I know the button was there yesterday because I used it to verify if my
class code was generated in the way I wanted it to be generated.

So, is it possible that a setting was changed or something like it?

How do I get the "Code Preview" button back?

Thanks