I recently upgraded K2 to version 2.6.7 and started getting the following error when loading K2 articles only:

Error loading component: com_users, 1

I have only 2 users (both super admins) on my site. Its a blog and there isn't an option to login on the front end. There was demo users and K2 content in the quickstart package I installed - these have all been removed and verified in the database.

So far I've done the following to try and fix the issue.

1. Uninstall/Clean install of K2
2. FTP'd the Joomla Administrator/com_users and components/com_users files
3. Made sure all comments were removed and turned off in K2 config
4. Checked and cleaned out my database tables of any comments/demo users
5. I have sh404sef installed and toggling on or off doesn't effect the issue.
6. I'm using a Gavick template which has K2 bundled with it. Switching to Joomlas default Atomic template doesn't fix the issue either.
7. User - K2 plugin is published


Any help would be greatly appreciated. I'm try to launch this week.

Joomla: 2.5.14
K2: 2.6.7

Same problem here with error 1064 and gavick template. Seems to really be with certain registration plugins like cb, or other social networking extension. Here is a link that might help.

getk2.org/community/New-to-K2-Ask-here-first/138269-K2---default-user-group---registration-problem