Nederlands 
English Joomla Error Messages
Save failed with the following error: Null primary key not allowed
While saving an article, you encounter this error message "Save failed with the following error: Null primary key not allowed".
This error message indicates that the changes cannot be saved.
Problem with #__assets table
1 of the causes of this problem may be related to the assets table added in Joomla 1.6.
To fix this, you need to go through the following 3 steps.
- Go to Menus > all menu items. Click on the "Rebuild" button.
- Go to Content > Categories. Click the "Rebuild" button.
- Go to Content > Articles. Select all articles. Click the "Rebuild" button.
Problem with a plugin
Another cause of this problem may lie in 1 of the plugins you have installed. Chances are that this is then a plugin in the "content" or "system" category.
Go to Extensions > Plugin Manager and filter the plugins by Content (or System).
After this, disable and re-enable the plugins 1 by 1 to find out which plugin is causing the problem.
Once you have found the plugin, contact the developer to solve the problem.
