Have you downloaded all parts? Then copy and paste them. Download CM12, give it administrator privileges, then click file - Open Select all and click on the database files that show up. You need to learn to use this tool - it is the most important tool for editing the game. Select where your fifa 12 is installed and click on fifa_ng_db-meta then fifa_ng_db then eng_us. CM12 will then be open, then click Tools and then select Regenerate BH and then it should be done. Regenerate BH a second time to be sure. That works for me.
Download These, follow me instructions and Try AGAIN:
Part 1: http://www.mediafire.com/download.php?bf44jdmbk9idm7x
Part 2: http://www.mediafire.com/download.php?dh44tx6a8frb55s
Part 3: http://www.mediafire.com/download.php?66yehcjicqs696n
Part 4: http://www.mediafire.com/download.php?jzjmig3sbgjep56
Download These, follow me instructions and Try AGAIN:
Part 1: http://www.mediafire.com/download.php?bf44jdmbk9idm7x
Part 2: http://www.mediafire.com/download.php?dh44tx6a8frb55s
Part 3: http://www.mediafire.com/download.php?66yehcjicqs696n
Part 4: http://www.mediafire.com/download.php?jzjmig3sbgjep56