[Seaside] Albatross needs (obsolete) WAScriptLibrary? Fix or testing alternative?

[itsme213]

I can't get Albatross to load, it fails with
    This package depends on the following classes:
        WAScriptLibrary

And apparently WAScriptLibrary is obsoleted by WAFileLibrary.

Anyone suggested fix, or alternative for testing Seaside (preferably in 
browser)?

Thanks - Sophie