Just did a fresh install of Joomla! 1.7.2 and K2 2.5 stable on my local server. So far everything seems to be working ok except the plg_example seems & mod_k2_content.
When I publish the mod_k2_content (with the plg_example enabled), and navigate to the page it is supposed to be displayed on, I get a blank white page. I turned on error reporting and this is the error I got:
Fatal error: Class 'JParameter' not found in /Volumes/Macintosh HD 2/jenniferormond/Documents/htdocs/jomsocial172/plugins/k2/example/example.php on line 79
If I disable the plg_example the mod_k2_content displays properly on the page.
I found the solution to the problem with the JParameter here:
forum.joomla.org/viewtopic.php?p=2526579
by adding the following code to the beginning of the example.php fixes the problem
jimport( 'joomla.html.parameter' );
Just wanted to post this in case anyone else was having the same problem