If you get that output but the application does not halt, then you can ignore it.
If you want it to be sandboxed, then you can’t access things in it. You would not need a crossdomain.xml file. If you are using Flex 4, make sure you added the option –includes=mx.managers.systemClasses.MarshallingSupport On 8/31/10 10:34 PM, "Yu, Deyang" <deyang...@citi.com> wrote: I am building a Flex portal. Which has main application and several sub-applications. I am using sandboxed application. I do have crossdomain.xml defined in both main application and sub applications. And in the main application, I used the swfloader like : <mx:SWFLoader id="couponApp" width="100%" height="100%" loadForCompatibility="true" trustContent="false" complete="allowLoading()" /> But when I tried to loading the sub application, it always give Security Sandbox Violation error. The error is *** Security Sandbox Violation *** SecurityDomain 'http://localhost:8080/isw/Applications.html?debug=true' tried to access incompatible context 'http://127.0.0.1:8080/coupon/Coupon.swf' Anybody has any idea and suggestion? Where did I go wrong? -- Alex Harui Flex SDK Team Adobe System, Inc. http://blogs.adobe.com/aharui