Database error in SEO and Sitemaps plugin

I recently checked my php error log and see that I have been getting the following error since installing the sitemaps plugin.

[27-Apr-2010 16:13:45] WordPress database error Unknown column 'option_type' in 'field list' for query select option_name, option_type, option_value from wp_1_options where option_name = 'permalink_structure' made by require, require_once, require_once, require_once, include_once, ms_muXmlSitemap->__construct, ms_muXmlSitemap->getPermealinkStructure

Any ideas?