I was really surprised when I realised that K2 didn't show my articles in the frontend! I created an item and put it into a sub-category but it disappeared. I also tried to make a direct link in the menu to the article but i got 404 error. I can see it in the backend but not in the frontend :(
Here it is the website, the article had to be in Windows\Utility
www.testing.softwarebay.it/

I solved the problem :D
I had to activate both the Joomla cache system and the GK Cache System.

That might be an answer to my problem as well. How did you do those things?

Oh nooo...
It's not working again!! When I modified an article it disappeared and now i can't publish anything, again :angry:
Anyway I just enabled the System - Cache plugin and another 3rd part plugin that is useful with GK templates.
Please help :(

I may be having this problem as well. To add confusion to the situation, I can see the page in category lists in the front end with information and images from the page yet when I go to the page itself I get the 404.

The 404 also says this:
"Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request."

I'm not sure if that is out of the ordinary though.

I am having the same problem with assigning menu items to a K2 item and then getting a 404 error in the front end. I have my Home page using blank component so that I can just have modules there so I don't know if that is a problem. The items appear in a blog or user page but not where I want them to be. There is no problem with placing a Joomla article under the same item.

Hello!

Fresh joomla instalation 2,5x
Fresh K2 download.

When crating new item or category, sais is saved, but not showing in the list?

Hi. Since there are too many posts, all of you having such issues keep in mind that a K2 item in order to be visible has to be:

1. Published.
2. Not trashed.
3. If it has start and finish publishing dates they need to be checked.
4. In a public access level.
5. In the current language or in "Any" language ( Joomla! 2.5 only ).
6. All the above are also required for the category of the item.