Error in a contact page with webform

Hi,
I have installed meta tags quick and everything seems to work fine at the beginning, but I am receiving an error when I access the contact page.

I have a contact page, with an intro text and then a block that includes a webform.

The error that i am receiving is:

* Warning: Invalid argument supplied for foreach() en metatags_quick_entity_load() (línea 52 de /home/jy000404/public_html/sites/all/modules/metatags_quick/metatags_quick.module).
* Warning: Invalid argument supplied for foreach() en metatags_quick_entity_load() (línea 52 de /home/jy000404/public_html/sites/all/modules/metatags_quick/metatags_quick.module).

If I take out the block with the webform, the problem dissapear.

Any ideas or suggestions to fix it?

regards
Facundo