Problem with new database

[cragtay]

Oh my god, it is a terrible nightmare

I increased the settings about memory in php.ini and my.cnf and I reduce the number of import items per cycle. At last, I finished all the modules successfully after 20 hours, even though there are some crashes. When I log in to AdminCP to do some Final Import Steps as said in the manual, I can't access
Admin CP -> Forums & Moderators -> Show All Moderators -> Edit
and
Admin CP -> Forums & Moderators -> Forum Permissions

I click to Forum manager and see only 2 default ones: Main Category and Main Forum.

And the nightmare happens when I go to my current forum, and there is some errors. Some posts and threads are displayed normally, and some ones disappeared. What's happened? What's wrong? How to fix it?

Please help me