Anyhelp please ......
I can not access my admin area. The page loads but when I enter user name and password it bring me error message.
The image is attached in the previous reply.

It looks like some permission error or htaccess error. Did you check the server error log?

Don't see errors in amin.

As for your frontend - you have javascript issues.

1) disable one of JQuery libraries loading - you have several of them

2) by somewhat reason old k2.js file is loaded (remained from 2.4.1 installation)

I think it is really something related to that. I will check for it.

Really thank you very much Bro. for your time.

I installed k2 2.5 & got the same problem.

I was able to fix it by using phpMyAdmin & changing the table for the K2_stats module to 0 to unpublish the admin module for K2 Stats.

I was then able to loginto the admin backend.

If you have a backup from prior to the K2 upgrade you should restore from that, that will fix it also.

I have the same problem ... anyone can solve it?