warning: Invalid argument supplied for foreach() in /var/www/html/sites/all/modules/cck/content.module on line 1284.

All of a sudden we're getting a warning message for some of our story nodes.

warning: Invalid argument supplied for foreach() in /var/www/html/sites/all/modules/cck/content.module on line 1284.

Any clue as to why? I don't have any at the moment.

I'm told it appears to be happening after a particular user with a special role has edited the node (Story). Although I'm not convinced this is true.