content_pathauto fatal error

Hello,

- I have set up the audio module on a drupal 5 installation with just one additional cck test field: source (not required and empty by default)

- I have set up the pathauto module to name audio nodes as "audio/[title]"

- I have set up the audio module to title audio nodes using "!title - !year"

- Whether I try to import one or more than one audio mp3 file, only the first gets imported, and the following error appears on screen:

"Fatal error: Cannot access empty property in /home/heritage/web/drupal5/modules/cck/content_pathauto.inc on line 48"

- I have tried setting the audio module's titling scheme to only !title or to a simple text string but the error remains and I think it prevents me from being able to do a mass import.

what is content_pathauto looking for?

Please help!
ktnk.