IFrame does not show up

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What steps will reproduce the problem?

I can use flex-iframe with no problems in the demo apps and I can create a 
simple application myself and it works just fine.

However when I try to use it in my main application the iframe does not show up 
and I can't work out why.

What is the expected output? What do you see instead?

I traced the output in Firebug and it comes up with the following error:

function onload(event) {
    null.AnIFrame0_load()

and the null causes an error

What version of Flex-IFrame are you using? On what operating system and
which navigator (specify the version too)?

IFrame 1.4.6
Mac OSX 10.6
Safari 5.0.3
Firefox 3.6.12

Did you follow the users guide ? Particularly, did you set "wmode" to
"opaque" ?

Yes set wmode to opaque and also have an id setup for iframe in mxml version

Please provide any additional information below, and a sample Flex 3
project reproducing the issue if possible.

I can't provide a copy of the app in full as it is way to big but it uses 
Defraga, Cairngorm, as3corelib, Defraga and flexlib if that is any help (in 
case they may conflict in some way). The app also uses Externalinterface to 
call javascript for other functions

Original issue reported on code.google.com by talktoughuk@gmail.com on 13 Dec 2010 at 10:33

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What is the method used to embed the SWF in the web page ?

Original comment by Julien.N...@gmail.com on 11 Feb 2011 at 6:51

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[deleted comment]

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Did you ever find a solution to this? We have the same problem on a specific 
pc. (onload="null.rte0_load();")

That pc and mine, which works perfectly, have both Win7, Firefox 9.0.1. We use 
flex-iframe-1.4.6.

Thanks.

Original comment by m.leivad...@gmail.com on 23 Dec 2011 at 12:47

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I have the same problem using FF 13.1 and iframe 1.4.6. It loads fine in Chrome 
and Safari but get the onload() error in FF

Original comment by sachinch...@gmail.com on 4 Jul 2012 at 3:35

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same thing happened to me.
when I run simple flexiframe example with firefox it works fine.
BUT it fails in chrome & IE9.0.8
once I changed wmode='opaque' at index.template.html it works fine in chrome & 
IE9.0.8

BUT when I changed to my project it works only on firefox even though I set 
wmode='opaque'

the follwing error I saw When I inspect element 
onload=null.iFrameByContent0_load();

does anyone know the solution for my question if so let me know!

Thank you.

Original comment by bhaskar....@gmail.com on 10 Aug 2012 at 12:20

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u cant fixed applicationId ="id of SWF object" ( in IFrame source file);
i have sloved it.

Original comment by canhlinh...@gmail.com on 27 Feb 2013 at 10:49

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Was this issue ever resolved? How ?

Original comment by hashmi.s...@gmail.com on 28 Feb 2014 at 4:07