Slipknot - Problems bass tab

This is a list of the songs that are not showing up and I thought to notify you the guys working

for Mx tabs

Personally

List of songs

Opium of the people

Circle

Before I forget

Duality

But anyway it says there are multiple versions of the song but nothing shows up ????????????????????

And can you please fix it and notify me thanks

LoCoTheBassPlayingClown1988

Have a nice day.

Taken from The BassMasta -- http://www.tabs-database.com