Hey DJ Brian,
I had the same problems when I imported 36K KMA's. It was either bad compression or something extra in the zip(mp3+G and another file) and some of the time it was bad filename, sometimes there was no files in the zip at all.?? As far as trying to figure out were u left off when it crashes, open the folder that your saving it too while your converting your Zips and leave it open. it will put all your new imports at the end of the list in order. Now you can see the last file imported and know that the next one is the bad one. Also only do 1500-2000 songs at a time or less and move them to a different folder so you know which ones you've done and which ones you need to do. Hope this helps.
