I have installed Moderator Statistics v2 which is for vb3, and it's giving me the same error while visiting page: misc.php?do=moderator_stats
I need this plugin because it gives a lot more information that VSA one, how can I fix it ?

In general, you shouldn't install vB 3.x products onto a vB 4.x site, unless you know how to port the product to vB 4.x. Porting between versions can sometimes be easy, and sometimes it can be a great deal of work.

Would you please port this for vb4.2 ?
I really need such a complete moderator stats for vb4, but none of them give much information about mods activities. The one which is implemented in vb4.2.3 just shows me smilies page instead of mod stats.
I appreciate it.

That product is quarantined, and so there are no files available for download. Even if it weren't quarantined, it is not marked as reusable, so porting it for use by others would require the consent of the author.

You mentioned trying the VSA Moderating Stats product, but found it lacking in information. What additional information are you wanting?

The threads and post that mods approve, unapprove, delete, move or any other actions.
I have VSA and it's only giving me the names of mods, no of posts, and how many actions each mod has taken and their recent activity time. and none is clickable except no of posts and mods' names.

When I want information that detailed, I look at the "Moderator Log." :)