Did you remember to run upgrade.php?

oh.. i forgot it. my mistake

after run the upgrade.php file, everything works fine. 

thank you very much Brett :)

Hello Gatchi,

Could you please share your fix for this issue? I want my users to be able to edit their comments.

Thanks!

This type of follow-up by the OP -- "nevermind, I fixed it" -- is the kind of thing that irritates me the most. Jeez, if you're just gonna say that, don't bother saying anything and delete your original question. In case anyone else finds this thread and is interested in the solution, the fix is a plugin called editablecomments. (which, by the way, is used here)

lolz ;)

ditto !

and while we're at it -- similar to the pathetic "help.. please help, but when I get my problems fixed, I will not come back here to share my knowledge.." too many "takers" sometimes...