undefined method ... tag/tag.php on line 31

[nktower]

I am getting this error which I interpret to be a code problem rather than data or configuration. Suggestions?

Fatal error: Call to undefined method JFormFieldPhocaTags::setError() in /homepages/37/d92728828/htdocs/rmc5/administrator/components/com_phocagallery/libraries/phocagallery/tag/tag.php on line 31

My environment:
Phoca Gallery 3.1.1
Joomla! 1.7.2 Stable [Ember] 17-Oct-2011 14:00 GMT
Joomla Platform 11.2.0 Stable+Modified [ Omar ] 27-Jul-2011 00:00 GMT
PHP 5.2.17
Apache

[Jan]

Hi, please let me know by which action you get this error?

[Jan]

Hi, seems like table "yourprefix_phocagallery_tags" does not exist in your database. Just check it.

Jan