So you can log into the default "master admin" account ok? But once logged in you can't create a new DB? Is that right?
TBH I'm not that familiar with Odoo nor did I do much work on this particular appliance. But assuming I understand right, maybe the DB user permissions are not being quite right? You should be able to manually tweak them in Adminer (log in via https on port 12322 using the "postgres" user and the password you configured on firstboot).
Also for future reference all the images are built from the ISOs. Some of the other build types have more substantial changes, but the OVA and VMDK are essentially just a vHDD of the ISO installed. So if the OVA imports ok, but then doesn't work, there is a good chance that the ISO won't either (and vice versa). Unless of course your download is corrupt. You can check that by comparing a hash of your download against the relevant sig file.
This might be a bug
TBH I'm not that familiar with Odoo nor did I do much work on this particular appliance. But assuming I understand right, maybe the DB user permissions are not being quite right? You should be able to manually tweak them in Adminer (log in via https on port 12322 using the "postgres" user and the password you configured on firstboot).
Also for future reference all the images are built from the ISOs. Some of the other build types have more substantial changes, but the OVA and VMDK are essentially just a vHDD of the ISO installed. So if the OVA imports ok, but then doesn't work, there is a good chance that the ISO won't either (and vice versa). Unless of course your download is corrupt. You can check that by comparing a hash of your download against the relevant sig file.