iOS: Cannot proceed with delivery: an existing transporter is currently uploading this package

When trying to upload new iOS app version from Apple Application Loader it says:

Cannot proceed with delivery: an existing transporter is currently uploading this package

I see this has solution if I was using Xcode for native iOS project. But I'm using Adobe AIR + Flex compiler. Flex SDK 4.13.0, FlashPlayer16 Using the same configuration before I did not have any problems. Targeting swf 27.

Any ideas ?