Re: Defualt member theme not working
I upgraded to WPMU 2.7.1 using the automatic upgrade so I assume it is the new wp-config.php file. However, I looked in that file and did not see the additional line that you mentioned. I added the line myself, however, there is no change.
Yes, I did the Site Admin > Upgrade when updating everything. I did it again just now to make sure; no change.