K2 Fails to run properly on T3 bs blank site.

Using T3 bs blank on Joomla 3.3.6 site. After installing K2 I get an error message:


Fatal error: Class 'K2HelperHTML' not found in /home/wlsdev53/public_html/dev/administrator/components/com_k2/k2.php on line 77

When clicking on the Component - com_k2 link.


Don't know what to do. k2 says to reinstall - same error. Won't uninstall properly either. Has to be manually removed from the extensions table.

Is this a problem with T3?

Please help?

Thanks.
Bill S>