Enabling Site Collection Usage Statistics in MOSS

So, I wanted to view the Site Usage reports on my development VM after reading a post byJoel Oleson.

I went to SharePoint Central Administration > Operations > Usage Analysis Processing. I enabled the logging there. Following the further instructions, I then enabled logging for MOSS. This is in SharePoint Central Administration > Shared Services > Usage reporting. I then went to view the usage for my site collection (Site Actions > Site Collection Usage Reports).

I was prompted for my username and password 3 times, which was puzzling. It looked like the HTTP Basic authentication dialog. After that I got a page saying "Service Unavailable". Worse, when I tried going back to my site, I got the same message. Checking IIS, I found the AppPool had stopped.

Examining the event log, I've got a bunch of errors from the .NET Runtime saying:

I've got no idea what's going on, and can't find any documentation. I'm guessing that something is configured incorrectly as I'm being prompted for my username? Incidentally, spadmin has full admin rights on the server.

[1549 byte] By [AndyBurns] at [2007-12-29]