Flex :: Error When Migrating A FlashBuilder Project To FDT?

I'm migrating a FlashBuilder project (actually a project I'm working on with FlexBuilder eclipse plugin on Linux) to use FDT. I managed to import the project, and make it aware of other projects it depends on.

However I get lots of compile errors for things that seem harmless (and used to compile). At least, for example :

<mx:SomeClass initialize="{this.init()}" ... >
<mx:Script>
<![CDATA[

[code]....

So, I get "unresolved function" for all the calls of the form someAttribute="{this.someFunction()}", even though the function is described in the same block file. Is it that I've been abusing AS3 / FlashBuilder for all this time ?

Also, generic components have problem. Assume I have a class with a deferred 'content' attribute, and I want to instanciate this class and "fill the blank" : I define a custom component in a CustomComponent.mxml file, with a deferred content

<mx:VBox>
<mx:Script>
<![CDATA[
public var content : IDeferredInstance;

[code]....

I'm using FDT 4.0, under Linux, with a (valid) eval key I'm using a custom Flex 3.5 SDK (not one shipped with FDT, but not a too strange one either)