I've found that as I go through my HUGE collection of MP3 that some tracks simply refuse to allow album art to be injected into them, this occurs with both WMA and MP3 files. Sometimes if I try multiple times to add the art or even go file by file to add it that after multiple attempts it's accepted. I found this in 2.35G and after upgrading to 2.35M I'm still seeing it. I've seen the thread on creating a column to indicate album art and indeed the problem files show up as not having it. When processing the files, in groups, I can usually tell I've hit a problem file because the file will be processed noticably faster (this overa network).
Have I hit a bug or am I the only one seeing this? I can provide examples if that would be helpful.
P.S. This program is incredible and were it not so good I'd never have attempted to get art for all of my albums or tried to get the tags straight. Many thanks and kudos!