Brand new install of windows all in-one-installer (OpenERP 7.0-20130407-232401), but problem existed on previous version too.
Create fresh db.
Try install any module, get "base_setup module appears to be unavailable at the moment."
And module installation fails.
This can't be a general bug as it would surely be listed on launchpad, which it isn't. Must be a configuration thing somehow.
What could cause it?