Warning: Invalid argument supplied for foreach() in metatags_quick_entity_load() (line 52)

Hello,

I have latest Drupal 7 stable,
Added 2 CCK META fields to my content type.
Created content type, and filled those fields.

When saving the node, I get the following error 4 times:

    * Warning: Invalid argument supplied for foreach() in metatags_quick_entity_load() (line 52 of modules/metatags_quick/metatags_quick.module).