Andy,
Thanks for the reply.
FYI…
I didn't interrogate the table to see if the exceptions were written to the audit tables. However, what concerned me most was that a user name which was not invited to a space, was totally locked up. this particular user could not access any links and some of the screen display was flaky (I could see a jsp tag bleed through on the dash).
Once I invited this user to the space, all worked well and auditing could be turned on. However, I now had to have this user permitted to use the space.
Thanks for your research. I am eager to resolve this so I can turn auditing back on. So, if you need more info from me, feel free to ask.
Thanks!
-Matt