I had a similar issue when doing the ID1 update via my XP desktop. I restarted the desktop and the update worked after that.
I do have a problem with the mail after this update though. The ID1 wipes the phone of data and settings. After the update the phone sync'd with the XP and reinstalled all of th email and contacts, but did it into the Outlook E-mail profile and did it as a “Sync Profile” – It's set up to sync, but has no ability to send or receive. There is no place to put that info in.
I created a new account that will send/receive, but now have 2 profiles.
1 Syncs with the desktop, the other sends/receives. – Problem… I called ATT over the weekend, they couldn't figure it out. I'm calling Samsung today
Also, it removed the TeleNav software – I'll let you know what Samsung says
So, have you been able to get WMDC to sync with the Epix in Vista?
I can't get my Vista laptop to connect with the Epix.