Try another OPtiplex 5040. This maybe directly related to this particular machine.
Could already be registered with blank info in the database. But we’ll rule that out later.
IF same error occurs on the same model but different machine then try installing an earlier version of the kernels.
Not sure how using older kernels will help with this one.
I’m suspecting that the current kernels with 1.1.2 do not have the network adapter driver for the 5040. If anything I might suggest moving to a newer kernel that will work with FOG 1.1.2
While I’m not familiar with 1.1.2, I might recommend that you rename your current kernels and then download the latest in the 3.x.x series from here https://sourceforge.net/projects/freeghost/files/KernelList/ to upgrade your current kernels.
I doubt that 1.1.2 has a debug boot, but if it did we could confirm that the network adapter is either not listed, or can’t pull an IP address.
In reality I might suggest that you upgrade to at least 1.2.0 (after making proper backups) and then use that to load the latest kernels for 1.2.0. Or just upgrade to the trunk version to take advantage of the latest features and disk support.