1146 - An error has occurred.

Table 's562559db0.cgn5u_k2_categories' doesn't exist SQL=SHOW FULL COLUMNS FROM `cgn5u_k2_categories`

Please how to fix it?

Try to do this.

In Joomla Admin area go to Extension Manager > Discover (side bar nav)
Click on the "Discover" button at the top.
Find all of the K2 files that weren't installed and select them. Click on "Install" button at the top.
Go back to Extension Manager > Install
Reinstall the K2 SVN version zip file on top of your old installation.

thanks a lot. It works.

You are welcome.

I seem to have the same issue, but following the above doesn't fix my installation problem.

Joomla! 3.2.1
Failed Install: K2 2.6.7 (public) and K2.6.8SVN(git)

This is the first I've run in to this issue, and I use K2 on every client site I work on.

Did you have an older version of K2 or this is a clean installation in a clean 3.2.1 Joomla! site?
Can you install other extensions?

Good morning Yiota,

It'a a clean installation of 3.2.1 on a new server (same configuration as the rest of my clients' sites).

I tried both the public release of K2 2.6.7 and a pull from Git (2.6.8 ) SVN.

All of the other standard extensions I typically install have installed fine.

I've tried the installation from URL, from the zip package as well. I'm at a loss from what the error could be. I would hate to have to wipe the server and try again, not knowing if the problem will persist.

When you went to the Extension Manager > Discover page did you get any unistalled items?
Also try to run a Fix to your database in case this helps.

I've previously completed both operations.

It doesn't appear to have an issue with the database, and there's nothing for the system to discover.

Check in your site's tmp folder for any remnants of previous uninstalled versions. Search also for any K2 files/folders installed even though you are getting an error.