same issue here running a fresh new K2 install on a fresh new joomla 2.5.6 install.

Can't see items nor categories in Chrome 21.0.1180.60 m but shows up on IE 7
Tried for the first time on Firefox 14 and worked.
Cleaning the cache on Chrome didn't worked.

I guess this may be some K2 issue with cache of its own interface components or browser-dependent javascript or something like that :-)

I see this is a K2 issue, as the off-the-box joomla Articles Manager doesn't have the same problem, nor any other extension dealing with its own categories.

We are having the same problem. Using Firefox 15.0.1 (Mac). Here is what I observed: After clearing browser cache, I relogin all items appear.. All categories appear. But when I go to the front end, select an image in the cart then return to admin panel, all items and categories disappear.

The cart should be designed for the browser I would think.

As we have been preparing for a presentation for a client, this is a big concern.

Hope there is a fix.

@channing

Since it's a CSS issue, use firebug in the administration to see what CSS rule is hiding the rows. If it's coming from K2 let us know so we can fix them.

I have the same issue. The K2 items and categories are displayed fine in the front-end, but they have disappeared in the admin back-end in FireFox. When I log in with IE9, they re-appear. How can I fix this issue?

You have to clear both your browser's cache and your Joomla! cache.

Krikor Boghossian wrote: You have to clear both your browser's cache and your Joomla! cache.

Unfortunately, this did not fix the issue. I cleared my FireFox browser cache, and then I went to Maintenance>Clear Cache and Maintenance>Purge Expired Cache and took action on both pages. I cleared my browser cache once more and visited the K2 admin items listing... they are still not showing up.

Any other suggestions?

Try to click Reset button at the top of the page.

BBC wrote: Try to click Reset button at the top of the page.

I clicked "Reset"... no change. :(

Why are at this forum disabled private messages ? Sometimes admin login info needs to be send to some users that want to help troubleshooting problems.

Or cant i see this option ?

Try this. If you have activated SEF disable it for a moment, and see if there are changes.

This topic is more than 1 year old, i dont think you have same problem as others.

BBC wrote: Try this. If you have activated SEF disable it for a moment, and see if there are changes.

This topic is more than 1 year old, i dont think you have same problem as others.

I disabled SEF and URL rewriting, but still no change.

I dont know. Need admin login, but private messages here dont work.


See if Firefox give JS errors in error console.

I have one site that I have had this issue with for a year.
Creating content works, but as soon as it is saved, it does not appear.
Simply no items or categories are displayed unless they are created with language type of ALL.
K2 Content Filter does nothing.
The items and categories appear on the front of the site and in the DB of course.
Try to create a new menu link to K2 content and they are not displayed so they can not be selected.
This appears to be purely a backend issue.
Joomla articles and categories are unaffected and displays all content.

The site is a multilanguage site, following Joomla protocol in multilanguage setup.

I have never seen this on any other site, but have seen many many reports and no real conclusive fix for it.
A lot of talk of browser compatibility, which I have never conclusively proven, use of Admin Tools which when disabled they appeared, but this has not worked for me.
Turn of SEF no fix.
Clear Joomla cache, hard clear browser cache, no fix.
Use admin tools to clear temp directories.
Disable K2 josetta plugins, no fix (Josetta not installed)
Disable language filter, no fix.

A little workaround if you need to edit an existing item.
If you have an existing menu link, then edit it.
In the link field, find the item ID.
In K2 Item manager, if you have an item listed, click to edit, then change that item ID to the one you found in the menu link.
Same process for categories, it is a bit clunky, but works if you do need to edit in backend.

I will post some further test information in due course.

Seen this with 2.6.6 and 2.6.7

I dont know why, but my thoughts go directly to some wrong line in .htaccess file.

To whom it may concern,

This problem is caused by the language set up in Joomla 2.5/3.0.
When using the built translation/language options of Joomla items and categories may disappear in K2.
If you set the categories/items to language ALL the will appear as normal.

I think this is may be a problem of K2, but it could easily be a problem with Joomla as well.

Johan Korteland wrote: To whom it may concern,

This problem is caused by the language set up in Joomla 2.5/3.0.
When using the built translation/language options of Joomla items and categories may disappear in K2.
If you set the categories/items to language ALL the will appear as normal.

I think this is may be a problem of K2, but it could easily be a problem with Joomla as well.

Hello,

Thank you very much, that indeed solves (kind off, at least for now) the problem.
Is there any progress ? Where should we look for the problem ?

Thank you !

Best Regards

I actually noticed that K2 language filter it's not working at all, which indeed it's causing the problem in my opinion !

Now if we solve the language filter we will solve the disappearing items and categories issue !

Any ideas ?

Regards

Johan Korteland wrote: To whom it may concern,

This problem is caused by the language set up in Joomla 2.5/3.0.
When using the built translation/language options of Joomla items and categories may disappear in K2.
If you set the categories/items to language ALL the will appear as normal.

I think this is may be a problem of K2, but it could easily be a problem with Joomla as well.

When I choose "All" from the language filter, it simply refreshes the page and does not actually choose that filter. Any other ideas for a workaround?