Cross Domain ExternalInterface “Error calling method on NPObject”

Question

I am trying to enable communication between Javascript and Flash via ExternalInterface across domains. The Javascript works great when it is located on the same domain as th

Answer 1

for me a few reason was (i'm using uploadify):

http server haven't permission to write file to destination swfobject (flash) haven't cross domain access

solution: object tag in html must have allowScriptAccess="always" it can be done by set param like

$('#file_upload').uploadifySettings('scriptAccess', 'always')
than flash object must have:
import flash.system.Security;
Security.allowDomain('remotedomain.com'); 

it can be done by compile source with this param, i have that, if you need it write to me with uploadify subject. Than Remote server, where flash include in the page, must have in the root crossdamoin.xml file with content like: