You can now use GFxPlayer instead of Adobe Flash Player to debug AS3 code. The Scaleform AS3 debugger lets you debug code running on consoles, tablets and phones and debug locally and remotely as well.
To use the AS3 debugger, replace the original debugger version of Adobe Player with Scaleform Player and then set up a debug session.
Use GFxPlayer with either of these external tools and set the player path to GFxPlayer:
FlashDevelop (http://www.flashdevelop.org/)
Change Player globally: Tools > Program Settings > FlashViewer > External Player Path.
Change Player for a project: Project > Properties > Test Project > Run Custom Command > Edit.
IntelliJ IDEA (https://www.jetbrains.com/idea/)
You can also debug remotely using the GFxPlayer with the following external tools:
FlashDevelop (http://www.flashdevelop.org/)
IntelliJ IDEA (https://www.jetbrains.com/idea/)
Note:To debug ActionScript and C++ simultaneously, launch a remote session within ActionScript IDE and run GFxPlayer within Visual Studio. GFxPlayer will connect to a debugger automatically.
Flex DeBugger (FDB)
FDT, based on Eclipse