Hi

few days ago I install Joomla! 1.7.3 Stable [ Ember ] 14-Nov-2011 con K2 v2.5.4 in my site but,
went I try to make a new User Group, just take the follow page with that error message

Warning: require_once(/home/*******/public_html/***/administrator/components/com_k2/controllers/usergroups.php) [function.require-once]: failed to open stream: No such file or directory in /home/********/public_html/***/administrator/components/com_k2/admin.k2.php on line 119

Fatal error: require_once() [function.require]: Failed opening required '/home/*******/public_html/***/administrator/components/com_k2/controllers/usergroups.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/********/public_html/***/administrator/components/com_k2/admin.k2.php on line 119

Some can help me

Thanks in advance

Have you checked to see if the files in question are there?
I would backup and then reinstall k2 over the top.

Good day
Already check if the corresponding files are inthe right folder and they have the write 644 permissions but I do not understand what happens?
Best regards

Hello,

I've got the same issue and the error messages, did anyone find a solution?

Am using Joomla 2.5.4 and K2 2.5.6.

Thanks,
GD

I dont know if you've found a fix for this already, but this worked for me.
Change the extrafield php file names so they are all in lower case

extrafield.php
extrafields.php
extrafieldsgroup.php
extrafieldsgroups.php

file location - /public_html/administrator/components/com_k2/controllers/

That worked perfectly. Thanks!!