I have been running both CB and Kunena on my Joomla (1.526) site for without problems for about 3 years

I have upgraded to CB 1.9 and have just upgraded to Kunena 2.03

When users are logged into my site they can hit the Forum (Kunena Page)

When guests try to hit the same page - they receive a 500 error that includes the following statement:

500 - JDatabaseMySQL::query: 1146 - Table 'mysite_qosJoomla.jos_extensions' doesn't exist SQL=SELECT params from jos_extensions WHERE element='mod_cblogin' AND type='module' LIMIT 0, 1

I have looked through my backups and I cannot find an instance of ever having a table called 'jos_extensions'

Any clues for resolving this will be appreciated.