Hi Heywood and maxfish
The message that was triggered by illegal character names in the file had been fixed, but there are other reasons this can happen, like permissions or location of the shared folder changing. Permissions don't apply to OS 9.2, however.

The kill/redownload can work--and you can try ungrouping the search results and downloading the file from each of the hosts individually. If that fails and if the location of your Shared folder hasn't changed, then a surprising fix that worked on OSX for me was to reinstall Java.