debug file in Zencart/cache just says:

[14-Mar-2014 06:46:21] PHP Warning: reset() [<a href='function.reset'>function.reset</a>]: Passed variable is not an array or object in /home2/XXX/public_html/zencart/admin/includes/classes/object_info.php on line 29
[14-Mar-2014 06:46:21] PHP Warning: Variable passed to each() is not an array or object in /home2/XXX/public_html/zencart/admin/includes/classes/object_info.php on line 30

It's been a long time since I made any changes to the Catalog so I'm not sure what information is supposed to show when I hit the Preview button but for a new item, it shows no title, no picture and no price and says I haven''t entered a quantity so it will default to 1. If I continue by hitting Insert it displays the error: ERROR: The data you submitted was found to be empty. YOUR CHANGES HAVE *NOT* BEEN SAVED. You may have a problem with your browser or your internet connection.

Updating an existing product does not produce an error but also doesn't make any updates to the product.

Also, when I hit the Update or Insert button it takes me to the Admin home page instead of back to the catalog. The same thing happens if I hit the Back button instead of Insert or Update.