ZenphotoPress breaking after site migration?

Hi there,

I’ve been developing a site with utilizing your wonderful plugin here:

https://architectureplusart.randallhoyt.com/

It works fine on the dev server, but when I transferred to public it stopped working:

https://architectureplusart.com/

I enabled debugging but it doesn’t spit back any errors. It seems it will no longer connect to Zenphoto. When you add the widget in the WordPress admin the drop down list for choosing which gallery to populate is empty.

When I change the the data path under Settings -> Zenphotopress it updated the database but the field disappeared after the update. I also updated the ZP gallery URL and it remains in the admin.

The dev server is running: PHP ver 5.2.17 & MySQL 5.0.51a.
The production server is running: PHP ver 5.2.13 & MySQL 5.1.47.

Any ideas to point me in the right direction for a fix would be most helpful!

Best regards,
David