FDT: Flash Player Debugger not connecting when debugging from Haxe project

I have a Haxe project set up and I have a debug configuration set up to launch the External Swf Viewer.

All of that works great but the debugger doesn't connect back to FDT. I get message in the console every few seconds saying that it's trying to connect.

Solution

There is a good chance that you need to add the option to "Add flash debug info" info to the Flash target in the .HXML file. Look at these screenshots:

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