Danko Kozar | Software Architect and Developer

This one gave me a huge headache: Flex sometimes cannot extract parts of the AMF response - like sub-objects.

This is because you got to have the instance of the sub-object instantiated in your app before the call.

This isn't a compile-time issue as I thought  (like Flex didn't embed the object's class definition) but a runtime issue. If I load this sub-object as root object via another method call, the problematic method starts working.

Whenever you have a problem that Flex Builder / Flash Builder won't build / compile your Flex application (e.g. you are seing the "stale" version which is doing other stuff than your source code, breakpoints don't match etc.) try clearing the browser cache.

If you use Firebug, check Net > Disable Browser Cache.

Or you can, alternatively, go to about:config and set browser.cache.disk.enable = false.

Or this: network.http.use-cache = false.

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