The issue is an unresolved conflict between Artisteer and the default Joomla 3 Administrator Template (isis).
A work around is to temporarily change the Administrator default template from "isis" to "Hathor". This allows the import of the content.
After successful import of the content change the Administrator default template back to "Hathor".
Quote Helene Fulton:
I have created a new website using Artiseer 4.3 standard ed.
When I export the Joomla template and install it on Joomla (latest version) it does not show in the Templates.
I have tested it with another template for another website that I did 2 days ago and this one shows.
Cannot see why the new one gives problems. Any suggestions?