Domain Mapping no longer works (in user admin)

Hi all -

We just updated Domain Mapping (and Multi Domain Plugin) and now we are not able to "Save" mapped domains on the user admin end of things. Need assistance.

To verify - we used the correct sunrise (sunrise_dm renamed to sunrise)

I have double checked wp-config and settings are correct.

Checked setting under Network Admin and they seem fine.

At this point domains are still resolving correctly, but I fear that might change if propogation updates. Not sure.

The previously mapped domains are not listed btw. It's just prompting for the custom domain, and when you enter one, it just refreshes the page.

Any suggestions??

Thanks so much in advance for your time.