I know I can resort to the adt command line and supply all the icon names there, but can't Flash Builder package this for me? MUST I use the command line to get my icons packaged?
Silly error ... the file path is not correct. I assumed that the file path was relative to my XML descriptor in the project. That XML file is inside the package "core" along with the folder "iOS_icons", so the file path would be "iOS_icons/icon-???.png". Instead the file path is relative to the XML descriptor file that FB4.7 creates for packaging. This ends up-one in the file path, outside the "core" package. So the correct file path turned out to be "core/iOS_icons/icon-???.png". This is what it should be in my XML descriptor:
<icon> <image29x29>core/iOS_icons/icon-29.png</image29x29> <image57x57>core/iOS_icons/icon-57.png</image57x57> <image114x114>core/iOS_iconsfirstname.lastname@example.org</image114x114> <image512x512>core/iOS_icons/itunes.png</image512x512> <image72x72>core/iOS_icons/icon-72.png</image72x72> <image76x76>core/iOS_icons/icon-76.png</image76x76> <image40x40>core/iOS_icons/icon-40.png</image40x40> <image80x80>core/iOS_iconsemail@example.com</image80x80> <image50x50>core/iOS_icons/icon-50.png</image50x50> <image100x100>core/iOS_iconsfirstname.lastname@example.org</image100x100> <image144x144>core/iOS_iconsemail@example.com</image144x144> <image152x152>core/iOS_iconsfirstname.lastname@example.org</image152x152> <image1024x1024>core/iOS_iconsemail@example.com</image1024x1024> <image58x58>core/iOS_iconsfirstname.lastname@example.org</image58x58> <image120x120>core/iOS_icons/icon-120.png</image120x120> <image48x48>core/iOS_icons/icon-48.png</image48x48> </icon>