Webplayer Emulation when doing Dev Builds?

I am working on a game and have done countless builds, i have played on local webplayers lying on for example c:\mygame\ that connects to my database that has crossdomain.xml file full functional.

All of the sudden my builds no longer work to play localy since they cant fetch the crossdomain.xml but they have been before all the time. I am wondering what might have changed and how do i fix it.

In editor if i clear the Webplayer Emulation field the calls to the database stop working ofcourse, and if i make a build and put it on the server it works fine.

But why has it been working for quite some time and all of the sudden not anymore? I have not upgraded Unity or done any majoc changes to anything so i am a bit stumped. If anyone have had any similar issues please share what happened, and if anyone has th same issue and fixed it please do tell :D

Thanks /Jerry