Adding custom icons to your AIR application can be painful if you forget to copy them in “bin-release” folder prior to exporting your project. 
You can also just check in “Copy non-embedded files to output folder” in Flex compiler properties:
Flex compiler properties
… or do not rely on Eclipse, use Ant
I’d love to, if there is a way to autobuild on save.
Is that possible ?
Well, I do not use this feature.
Nevertheless it should work if you create a new Ant builder.
Well, yes, I don’t really need “autoexport”, you are right ^^
What do you mean?
I’m getting this error only while exporting (not building), so there is no need to automatize that part.
An Ant script is perfect solution