Thanks for the updated plugin, which considerably sped up the speed on syncing the Zen. However, the crashing issue remains. Every single time I perform a syncing operation to the Zen, MC9 "unloads" itself completely within a few minutes. This ONLY happens after a sync operation to Zen, and it REQUIRES mouse interaction. If I Sync and do not, in any way, click anywhere on MC9, MC9 can stay running for hours. It does not always happen on the first click, sometimes it takes as many as ten, but eventually within these ten mouse clicks MC9 unloads fully. By mouse clicks, I mean normal navigation within MC9, like moving trhough the media library, and vieweing playlists.
One pattern is this: MC9 crashes more quickly ig my clicks after the syncing operation are on the Zen itself, such as vieweing playlists on the Zen. It takes longer for MC9 to crash if I avoid clicking on the Zen and only click on PC ralated items, such as my main library.
The only other details I can think of adding is that I use firewire to connect the Zen, and that my libary is on a mapped network drive to a machine running Windows Server 2003.
Thanks for the information on how to "fix" the multiple artists tag issue.