[Plugin: WordPress MU Domain Mapping] WP MU Domain Mapping Problem with Ajax request from the ALL-In

I am having a problem installing the All-In-One Event calendar on my WP MU instance that uses MU domain mapping 0.5.4.1.. Basically the support team at AIO event Calendar tells me the following is ocurring.

XMLHttpRequest cannot load http://gamoms.org/wp-admin/network/admin-ajax.php. Origin http://alpharettamoms.net is not allowed by Access-Control-Allow-Origin.

It has to do with the domain mapping, I am not sure why it redirects from alpharettamoms.net to gamoms.org?
If you find what is causing it, you will solve the problem.

my further research on the wPMU site finds: http://premium.wpmudev.org/forums/topic/ajax-and-domain-mapping-dont-play-well-together#post-103601 article that discuss and issue with not finding ajax-admin.php, which appear to be exactly what is happening to my site.. Could you please advise on if my configuration might be wrong or if there is a work around?

http://wordpress.org/extend/plugins/wordpress-mu-domain-mapping/