I am getting the following notices from Fox Admin Tools - I did a fresh install of joomla and k2 on a subdomain but it also does not have a "DS' in the file path name. Does anyone know what is going on? I installed Fox Admin Tools when my K2 install stopped saving items correctly. In order to save an item I click save which then takes me to index.php blank page, then i use back arrow and cancel out of the item. The changes are correctly saved. It's just tedious.

require_once(/home/********/public_html/modules/mod_k2_userDShelper.php): failed to open stream: No such file or directory
on /modules/mod_k2_user/mod_k2_user.php
at line 20

Use of undefined constant DS - assumed 'DS'
on /modules/mod_k2_user/mod_k2_user.php
at line 20

Use of undefined constant K2_JVERSION - assumed 'K2_JVERSION'
on /modules/mod_k2_user/mod_k2_user.php
at line 13

Hello,

Is the K2 system plugin enabled on your site?

Yes certainly is enabled.

I asked JomSocial for assistance also because their Share Box isnt working and their reply was:

This issue caused by modal box from K2, I suggest you contact K2 developer for this.
jQuery(function($) {
SqueezeBox.initialize({});
SqueezeBox.assign($('a.k2modal').get(), {
parse: 'rel'
});
});
function jModalClose() {
SqueezeBox.close();
}

this is error detail :
Uncaught ReferenceError: SqueezeBox is not defined

Also on Kunena Forum when I went to post a topic i get this fatal error:

Fatal error: require_once(): Failed opening required '/home/therunel/public_html/modules/mod_k2_userDShelper.php' (include_path='.:/opt/php/php-5.5.0/lib/php') in /home/therunel/public_html/modules/mod_k2_user/mod_k2_user.php on line 20

When I look at the path for this, it is just mod_k2_user/helper.php, i.e. there is no 'DS' in the path.

This whole thing is still related to my previous tickets. I think i will be going line by line with the test install I have done.

Which version of K2 are you using?
DS is defined in K2, and for some reason it is failing.

Try reinstalling K2. If the issue still persists let me know

Version is 2.6.9, and I am not sure how to regain my items and settings if I uninstall K2 and reinstall it.

I never said to uninstall it.
Simply install on top.

Reinstalled it and still seems squeezebox is preventing JomSocial Share Box to work. look at #146275. At least the reinstall allowed Kunena Forum to work, that had also been having problems.

May have to get Kelsey to do a fresh install for me and I will try to export my existing information.

Can you send me a link to your site?