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Where to go from here

Where to go from here: Flash Builder 4.5 and Flex 4.5 New Features
Where to go from here: Flash Builder 4.5 and Flex 4.5 New Features

Join for an in-depth discussion in this video Where to go from here, part of Flash Builder 4.5 and Flex 4.5 New Features.

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Skill Level Intermediate
2h 15m
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Q: Is Flash Builder compatible with Mac OS X 10.7 (Lion)?

A: Yes, Flash Builder 4.51 is compatible with the most recent version of Mac OS X. (The original Flash Builder 4 is not compatible with Lion; if you want to upgrade Mac OS X, you'll also need to upgrade Flash Builder.)

Unlike previous versions of Mac OS X, Lion does not include a default Java development environment. Before running the Flash Builder installer, you should install Java for Mac OS X. Failure to do this will result in Flash Builder 4.5, rather than 4.5.1, being installed on the system.

You can trigger the installation of Java with these steps:
1. Open Terminal.
2. Type 'java' and press Return.
3. Follow the prompts to download and install Java.
There is one usability issue that will affect all users of Flash Builder on Mac OS X 10.7–right-clicking in the package explorer may stop working after prolonged use of Flash Builder. To resolve the issue Flash Builder must be restarted.

Finally, the Flash Builder installer includes a version of Flash Player that is not recommended for use with Mac OS X 10.7. Rather than installing the default version, you should download and install the latest debugger version from

Q: I'm using the most recent versions of Flash Builder and Flex. The projects provided in this course's exercise files don't run correctly. How do I get the code working?

A: The course's exercise files were built for the original release of Flash Builder and Flex 4.5. There are two potential issues: the version of the Flex SDK linked into each project and the version of Flash Player you have installed on your system.

For each project, follow these steps after importing it into Flash Builder:

  • In the Package Explorer view, right-click on the project name and choose Properties.
  • Click Flex Compiler.
  • Change the Flex SDK Version to Use default SDK.
  • Click OK.
  • The project should now compile correctly.
When you run or debug the application, if you see errors indicating that you need a newer version of Flash Player, you should install the version that's included with Flash Builder. To do this:
  • Open Windows Explorer (Windows) or Finder (Mac).
  • Navigate to the Flash Player installation folder.
  • Open the player subfolder.
  • Open the subfolder for your operating system (Mac or Windows).
  • Open the version subfolder.
  • If running on Mac, open the DMG file and install the Flash Player application.
  • If running on Windows, run the Flash Player installer executable for whichever browser you use for previewing Flex applications.

Skills covered in this course
Developer Flash Builder Flex

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