Source path in [Embed..] problems

I'm trying to embed an image but have problems with the source path.

I have an image next to my compiled swf and I try this:

[Embed(source="image.png")]

But I get compiler errors that it can't find the file. I've read somewhere that the relative root can be something else than the actual output folder but I nothing I've tried have worked.

However, if I use an abolute path like this:

[Embed(source="C:/folder/folder/folder/folder/bin/image.png")]

it works, meaning I can compile and the image shows, but IntelliJ still marks half of the path as erroneous.

So two different problems I guess.