Well, I finally found a re-producible fix (forget about my first draft of fixes):
During the vdp-configure web interface, when it gets to the storage part, and errors present re: storage configuration (it won't show any datastores), simply hit back, and next, and keep going back and next until the datastore info populates, presents and shows properly.
When they show properly, continue with the vdp-configure web interface. Chances are the CPU/Mem config will error (showing 0//0, however sometimes it is accurate), but you can continue as this won't cause the configuration to fail.
I've tested, and re-produced this multiple times now.