Nope. My layout looks like this:
MP3s are contained in Artist\Album below each of the MP3s folders.
I've had it freeze up enumerating both MP3s directories. Generally, the incoming one only has a few albums in it (it's where I modify all the tags before copying them into the collection). The main one has about 300 albums in it right now. I've -usually- seen it -adding- MP3s as an additional directory.* I have seen it switching main directories to MP3s as well, though.
So, more info. It always does it very first thing, before it touches any files (that I see in the interface). It's a hard hang, and once I restart the app, it generally reads the directory fine. I'm pretty sure it's not hanging up on any specific file because it does it at the beginning and has done it in different directories with different files.
Like I said, if there's debug logging somewhere, I'm happy to turn it on and send you a log next time it happens.
- I create playlists by making D:\Music\Incoming\Playlists my main dir, adding D:\Music\Incoming\MP3s, then hitting Ctrl-Shift-P to playlist everything by album. Then I copy the MP3s and Playlists into D:\Music\MP3s and D:\Music\Playlists respectively so the relative paths are still valid.