When I tried to logon to admin, I got thr following errors.
K2 Quick Icons (admin)
Notice: Use of undefined constant K2_JVERSION - assumed 'K2_JVERSION' in /mnt/data/vhosts/casite-415968.cloudaccess.net/httpdocs/administrator/modules/mod_k2_quickicons/mod_k2_quickicons.php on line 15

Notice: Use of undefined constant K2_JVERSION - assumed 'K2_JVERSION' in /mnt/data/vhosts/casite-415968.cloudaccess.net/httpdocs/administrator/modules/mod_k2_stats/mod_k2_stats.php on line 15

Notice: Use of undefined constant K2_JVERSION - assumed 'K2_JVERSION' in /mnt/data/vhosts/casite-415968.cloudaccess.net/httpdocs/administrator/modules/mod_k2_stats/mod_k2_stats.php on line 23

Notice: Use of undefined constant K2_JVERSION - assumed 'K2_JVERSION' in /mnt/data/vhosts/casite-415968.cloudaccess.net/httpdocs/administrator/modules/mod_k2_stats/helper.php on line 23
Notice: Use of undefined constant K2_JVERSION - assumed 'K2_JVERSION' in /mnt/data/vhosts/casite-415968.cloudaccess.net/httpdocs/administrator/modules/mod_k2_stats/tmpl/default.php on line 15

Notice: Use of undefined constant K2_JVERSION - assumed 'K2_JVERSION' in /mnt/data/vhosts/casite-415968.cloudaccess.net/httpdocs/administrator/modules/mod_k2_stats/tmpl/default.php on line 32

Fatal error: Class 'JPane' not found in /mnt/data/vhosts/casite-415968.cloudaccess.net/httpdocs/administrator/modules/mod_k2_stats/tmpl/default.php on line 32

Can you please resolve the problems for me. Please tell me what caused it. How did you fix it/

Thanks you.

Hi. It seems that K2 is not installed properly or you are running a very old version of K2. You need to update K2 to it's latest version 2.6.7. Also ensure that you have a supported Joomla! version. Currently supported Joomla! versions are Joomla! 1.5.26, Joomla! 2.5.18 and Joomla! 3.2.2.

My Joomla version is 3.2.2.
My K2 version is 2.6.7 that I installed two weeks ago. I am a first time K2 novice.

I re-installed the same version of the K2 module k2_v2.6.7.
It resolved the issues I reported.

Thank you for giving me the hint to re-install the K2 module.

You are welcome.