After the latest upgrade (9.1), it seems that Daviz requires a new module (EEAContentTypes) which is not provided during install.
The absence of that module affects many operations throughput Daviz, including data import and visualisation editing-
Adding the EEA Eggs repository (
http://eggrepo.eea.europa.eu) to buildout.cfg does not solve the problem, as it leads to unresolved dependency issues.
Here's the traceback that comes up when attempting to import data: