I just had this problem, and after an hour and a half on google I found out what happened.
It won't normalize when there's a spike in one of the tracks that will distort if it's normalized. The way to get around this is to normalize around the spike, amplify it into the negative, or pick a loudness value in amplify and highlight each track to do it by hand.
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Date: 2008-06-03 01:35 am (UTC)It won't normalize when there's a spike in one of the tracks that will distort if it's normalized. The way to get around this is to normalize around the spike, amplify it into the negative, or pick a loudness value in amplify and highlight each track to do it by hand.