Installation problem on Intel Mac - ezdac~ missing

So, having used the built in transfer function to transfer everything
over from my Powerbook to my Macbook Pro ....
I thought at first everything awas ok with Max, but then realised (or
started getting) various error messages. So I figured the best thing
to do was to wipe everything and start again.

So I removed 4.6 with AppZapper, after copying all of my 4.5 & 4.6
files over to an external disc for safety.

Re-installed Max/MSP and Jitter (most recent installers).

Now, whenever I try to launch max I get the following error messages ..

error: can't fragload ezdac~ (missing), err-4

and the same for ezadc~ and gain~

If I do a Find for ezdac~ I find ezdac~.mxo and ezdac~.help , but
that's it. ezdac~.mxo lives in the startup folder, so I guess that
that's the replacement for ezdac~??? But if so, why is Max still
looking for ezdac?

What's going on!!???

And what do I do to fix it?

thanks

David