Michael,
I am testing out EF 1.4.8 and I have had some difficulty in importing Entourage mailboxes, both through drag and drop and using the capture key. I succeeded in importing some mailboxes but not with others. In some cases I received an Applescript timeout error, and in other cases I received another Applescript error (see attached error messages).
However, it appears that if I drag and drop the relevant mbox to the Finder and then from the Finder into EF, the import will work, as mentioned by the previous poster.
I am running Snow Leopard on a Mac Pro early 2008 and Entourage 2008 (latest version).
Any help/suggestions would be greatly appreciated.
Regards,
Andrew