Please take a look here as well:
http://www.zenphoto.org/support/topic.php?id=533750#post-725640
We generally recommend step by step upgrades. We primaril test 1.4.4 to 1.4.5 but not from older versions directly (although I did upgrade installs from 1.0.8.2 even successfully directly).
If things fail there should be errors in the logs.
Quote:I got a zenphoto.cfg in zp-core and one in zp-data.
The first is the template file to create the actual config file which is why it has a .txt suffix and the real one doesn't.
You should in any case update to 1.4.5.9.