Not Found error when creating groups

Hoping I can get some help troubleshooting an issue where I receive a Not Found message after creating a new group.

My setup:
WordPress ver3.8.1
BuddyPress 1.9.1
bbPress – Latest
BP MultiNetwork – BuddyDev

URL: https://alumnicreator.com – Main site
URL: https://eastatlantaalumni.org – Domain Mapped Site

First, I can create groups from the Main site without an issue. It’s only when I attempt to create a group from one of my mapped sites that I get a Not Found error after clicking Finish. In spite of the error the group gets created with the following URL:

https://eastatlantaalumni.org/groups/class-of-1988/forum/

The same for the forum in that after checking to have one created with the group it gets created with the same URL and it’s page returns the same error. If I manually create a forum it’s page appears fine:

https://eastatlantaalumni.org/forums/forum/co88/

Yet if I link that forum to the existing group I get the same Not Found error.
This issue occurs regardless of whether the site is mapped.

This seems to point to an issue with groups yet I’m not sure if it’s related to the setup or the bp multinetwork plugin. I’ve got a few threads opened on the BuddyDev forum but have yet to get a reply. Wondering if anyone here has run across this and can maybe provide a fix or link to resolve.

Any responses appreciated