There’s plenty of evidence on the blogs, Adobe bugs, and elsewhere, that there are issues dealing with the compiler locating resources at compile time.

You ask yourself, where do I put my assets, my images, my CSS files?

Using one notation, Flex Builder will find the resources but switching to Ant causes all hell to break loose.

Here’s a simple and fairly elegant way to deal with it.

There are two things you need to know to understand what’s going on.

1. The forward slash(/) operator is used to indicate the root. But what is root? The Flex compiler considers the ‘main source folder’ to be the root. Hence when you say ‘/’, you are actually referring to the ‘Main source folder’ (which you can set in Project>Properties>Flex Build Path>Main source folder), which in most cases would be set as the ’src’ folder.
2. How to traverse a path. Pretty simple. If you do something like [Embed(source="/../assets/images/icon.jpg")] and src is your main source folder, the compiler will start at src, go up one level, find the assets folder and voila!

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