Cannot install IPA on my ios 5 devices."A signed resource has been added, modified, or deleted."

Hi guys..

I've spent the last 3 hours wrestling with this.

I'm using flexbuilder 4.6 on pc, with air 3.1.

I'm using my mac to do the installation on the device.

I used to be able to deploy the ipa files output by flashbuilder 4.6 to my ipad, and iphone. I cannot anymore. I don't know if it's because of ios 5, or lion, or what..

I could never install the ipas in windows,

I always used the iphone configuration utility in os x to install; but now I get "A signed resource has been added, modified, or deleted." every time I try.

Same thing happens in xcode organizer.

If I try via itunes it just creates the app icon on my ipad in loading state and never finishes.

Things I've done:

I've created entirely new provisioning profiles and app ids,

I've verified that the profiles are indeed valid: I did this by changing app identifiers for some of my cocoa/xcode projects),

I've turned on/off devices/computers etc.

I can't tell you how utterly frustrating a night it has been, especially seeing as the turn around time to verify in xcode for cocoa apps is about 20 seconds, but the workflow with air is like 5 mintues a time. and each time ends with no hint whatsoever as to what is wrong.

Is there anyone else out there who's had this and worked around it - or someone who can put me out of my misery.

I literally can't do any testing at all right now... wtf..