Restore your original dt02.img from your game install disc or backup. Then, ensure the mod you are installing is compatible with your game version (e.g., Konami official patch 1.03 or 1.04).
do you want to change (chants, menu music, crowd)? Are you using a patch (e.g., PESEdit 6.0)? Dt02 Img Pes 2013 - Dt02 Img Pes 2013
If you are using a major patch like PESEdit , ensure the dt02.img folder in your kitserver13 directory isn't missing files. Restore your original dt02