Installation fail of some modules

I had previously had all the modules installed, then recently I decided to reinstall some of them, some install fine and others don't, the errors I get no matter what the module is, does anyone know how I can fix this?  Installed version 7.1.2.

Installation of: Sites (or whatever the module name is) Failed

 
-- Changing database: 
-- -- There are errors in the following MySQL queries:
-- -- Error: 
SET @iMemberMenuParent = (SELECT `ID` FROM `sys_menu_member` WHERE `Name` = 'AddContent');
Quote · 22 May 2013

Have reverted to a backup version of the site and is working fine now.

Quote · 23 May 2013
 
 
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