Next URL feature is not working.

Next URL feature is not working.

When accessed using the URL 

http://creator.zoho.com/[USERNAME]/[APPNAME], the Next URL upon logging out works absolutely fine.

But we've converted the primary account to a domain account, added a sub-domain to point to ZC. So when I use the URL

http://[MYSUBDOMAIN].[MYDOMAIN].COM/[USERNAME]/[APPNAME], the Next URL upon logging out is NOT working.

-Varun.