Hi, I've been getting security sandbox violation errors when trying to run up my application. Here is my scenario: - HTML container deployed locally in IIS to C:\Inetpub\wwwroot\remote - HTML container references SWF (custom ArcGIS Flex Viewer) on another server - The SWF file calls Javascript functions within the container page I assumed that the crossdomain.xml file should live at C:\Inetpub\wwwroot on my machine, as the HTML file is the data on another server according to the SWF, but I'm still getting this error. This is what I have in my cross-domain file <?xml version="1.0"?> <!DOCTYPE cross-domain-policy SYSTEM "http://www.adobe.com/xml/dtds/cross-domain-policy.dtd"> <cross-domain-policy> <site-control permitted-cross-domain-policies="all"/> <allow-access-from domain="*"/> </cross-domain-policy> Can anyone tell me what I'm doing wrong here? Thanks Luke