Hi,
I have some users having issues with my Flash app in relation to the ExternalInterface.call (AS2) script - it's either not executed or not returning a value. My users both use IE and Firefox, Flash player 9 or above, on average it affects about 10% of my users.
What I'm looking for is really a list of possibilities just to give me a starting point in troubleshooting this error, e.g. Internet/browser security settings, firewalls, antivirus, etc.
I missed the link for point 2 above:
http://kb2.adobe.com/cps/400/kb400730.html