I have successfully used CComment on localhost, but now I am having a few problems moving online. I installed the last 5.0rc2 version on Joomla 3.1.1, K2 version is 2.6.6. The problem is: when I enable the K2 CComment Plugin I cannot access anymore to K2 item creation/editing back-end window, nor category/user editing (not sure if some other features are broken). I got a generic error and I am not able to get more infos about what is going on.
When it happened the first time I didn't know what was causing the problem, so I tried to change in any way the files permission, but no success. So I removed Joomla and installed again, everything works until I enable that plugin.
The only difference from localhost is that I was using rc1, not rc2.