OK, next...

The WebApp.src seems to need to be updated with:

Object oApplication is a cApplication

    Object oConnection is a cConnection
        Use LoginEncryption.pkg

Because Stables assumes that will be there (not actually sure if Use LoginEncryption.pkg is required in that - it doesn't actually seem to be).

Now I am seeing many, many errors that I am still digging into, but some look to be coming from Stables, while others are on the client... will report back when I know more. I suspect they might all have to do with ValueTrees, but who knows.