SQL 2005 Failover Cluster Install Failing.

I am tying to set up an SQL 2005, SP1 failover cluster on a new set of hardware. Everytime I try to run the install, I get this error




TITLE: Microsoft SQL Server 2005 Setup
------------------------------

Setup failed to start on the remote machine. Check the Task scheduler event log on the remote machine.



I've gone through this doc (http://msdn2.microsoft.com/en-us/library/ms189910.aspx) and checked all of the applicable cautions:

I don't have an antivirus package running.

All of the SQL setup pre-checks run fine.

I have a SQL Group created, with the shared drive as a resource.

NBT is disabled on both heartbeat NIC's.

NBT is explicitly enabled on both external NIC's.

While I do have DDNS running, just to be safe I've pre-created an A record for my SQL VR.

Both nodes are registered in DNS and Setup correctly finds the second node.

In the Application event log on the second node (the one failing...), I get MSI Installer 'Install Started' successes (and sometimes I even get "Product: Microsoft SQL Server 2005 -- Installation completed successfully.")

I am running the install as myself, a Domain Admin and am explicitly added to the Administrators group on both servers.

Remote Registry is running.

Task Scheduler is running.

There is plenty of space everywhere.

All of the Admin shares are enabled.

The node I am running the install from is the owner of all of the cluster groups and resources:


Cluster group

MSDTC group

SQL group

This is all that is in my setup log:


Microsoft SQL Server 2005 9.00.1399.06
==============================
OS Version : Microsoft Windows Server 2003 family, Enterprise Edition Service Pack 2 (Build 3790)
Time : Tue Nov 06 16:45:52 2007

Task did not appear to start on machine: \ERLEW01B: 267013


I'm at a total loss and I'm getting very frustrated...

Ed