I had my Vista test machine working, but hosed it up doing some further 'Vista' testing. I reinstalled (reimaged XP and then upgraded to Vista) and now when I try to install the agent, discovery works, but the deployment hangs at 'Registering' with the status showing:

ZENworks PreAgent finished. Waiting for device to register.

Server is W2003 I'm up to the latest ZCM patch. I'm wondering after reading (in another thread) that VistaSP1 breaks registering if some other Windows update that I also installed is what's causing this, or if somehow the fact that this physical machine (mac?) has been registered before. I deleted the old registration from the ZCC.