F4 (Edit source) for editing file from changes view

Hi there,

Not sure what's causing the editing option (in the repository changes view) to be greyed out in my latest project. It's a grails one (if that makes any difference) and both the edit source and diff with local options are disabled when I select a file in a particular change set. I'm using svn (over https) and I believe the paths are set correctly (I tried setting both the project or a specific directory within to svn, to no avail).

Any known issues, or workaround tips?

Thanks,
Andrei