Bingo...that did it...! (I had done the same thing you did--disabled UUP and rebooted, started WU--nothing. Enabled UUP, rebooted, started WU--and I am now downloading...! ) ...If I have trouble upgrading though, I'll revert and go with the esd-iso...I want to see if this will work first, though.
Same taskbar bug with 3D Acceleration enabled in VMWare, so I am assuming the same with NVIDIA drivers installed on real hardware
Heh... Looks like I spoke too soon, because after watching it go through all of the download steps, and then seeing it peg at 100% complete--was waiting for the instruction to reboot to begin the upgrade--and instead it went right back to "Initializing Updates" and hung there...! Joke's on me, I guess... I salvaged the install.esd, though, and am trying again with UUP turned *off*...it appears to be working, now--will come back when it completes--if it completes...!