Updated 4101 error to have a message associated.

Change-Id: Iac47fe3ee0158b0d5426a48d32437e14b5af07f5
Reviewed-on: http://review.couchbase.org/28938
Reviewed-by: Matt Ingenthron <matt@couchbase.com>
Tested-by: Brett Lawson <brett19@gmail.com>