I try to use the example from Adobe help reference as following address: http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/mx/controls/Tree.html#includeExamplesSummary

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Editorial Team

Asked: May 24, 20262026-05-24T17:23:08+00:00 2026-05-24T17:23:08+00:00

I try to use the example from Adobe help reference as following address:

I open FlashDevelop IDE, creat a new Flex 3 project, then copy the code of example to the main.mxml, save it, then run builder.

It failed with “…\TreeExample\TreeExample\src\Main.mxml(5): Error: Could not resolve <s:Application> to a component implementation.” error message.

There is a “How to use this example” link beside this example, but I didn’t find any useful information I want.

How can I run this example in FlashDevelop IDE?

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Editorial Team · Answer 1 · 2026-05-24T17:23:09+00:00

Editorial Team

It seems, that you try to compile component from newer Flex sdk with older one (3.x instead of 4.x)

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