in VAST 7.5.2 with MEDRefactoringBrowserExtensions loaded, there are several bugs when using some refactorings. Most of them end with an AbtScriptBrowser doesNotUnderstand: selectClass error.
Examples: In the class browser, click Class->Create Subclass and canswer the questions. boom.
I know I've seen some of these, but have none at hand right now. Most of the time this has to do with updating the browser after a refactoring has been done.
Maybe this can be fixed in some upcoming release?