DS920+ RAM upgrade not recognized in VMM (but elsewhere it is!)?

[markus]

For others having the same problem: I had to uninstall VMM. This does not remove the VMs, so I did not lose any data. (And my continuously failing attempt to get the VMM export feature working was not needed.) When I re-installed, I had to add the store volume back, which was quite easy. Also some network setup adjustments. VMM then recognized all my 20 GB of RAM.Possibly a bug in DSM 6.2.3-25426 Update 3, or in Virtual Machine Manager. Or something else.