Error: 15 Type: securityError Description: A security sandbox error occured with the flXHR request. Source Object Id: [your object id] I am trying to deploy my application on Tomcat and was continuously facing the issue. The solution to this problem is placing your crossdomain.xml in /webapps/ROOT. Just for reference attaching the sample crossdomain.xml on which I was working trying to workout my PoC: <?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="master-only"/> <allow-access-from domain="*" secure="false"/> <allow-http-request-headers-from domain="*" headers="*" secure="false"/> </cross-domain-policy> Hope this will help.
My Opinion.