Setup was unable to create unknown machines. 0×80070003

Guys,

I'm posting the solution (at least in my case! Rss) error of installation of SCCM 2007 R2 on a Windows Server 2008 with SQL 2005 SP2

The error displays the following message when installing R2:

"Setup was unable to create unknown machines. 0×80070003″

In my case, I found the solution to this problem was to manually create the directories "auth \ ddm.box" into the directory "imbox" as shown in the image below:

I hope it's useful!