Wednesday, April 25, 2012

How to Make Flash Builder Start When it Won't Start

 Recently I've been working with Flash Builder 4.6 on Mac OSX 10.7 a.k.a. Lion.  A couple times now I've encountered a problem where Flash Builder just won't start.  It just hangs at the splash screen and the little beachball spins away.

Through Googling, I learned that other people have encountered the same behavior and they fixed it by deleting a .metadata file in their workspace. Supposedly the issue was that the workspace had become corrupted.

I could not find a .metadata file, but I was able to get running again by doing the following:

  1. Shut down (force quit) Flash Builder.
  2. Rename the workspace folder.
  3. Start up Flash Builder.  Behold!  It starts!  All the projects are now broken because the paths are now incorrect.
  4. Shut down Flash Builder.
  5. Rename the workspace folder back to what it was.
  6. Start up Flash Builder.
  7. Breathe a sigh of relief.

Hope this helps someone out.


  1. Thanks man - this helped.

    I hate eclipse - well mostly I hate IDEs :-/ but they can't be avoided sometimes. Ugh!

    1. awesome, Glad it helped!
      Generally I've found Flash Builder/eclipse to be really valuable, but it is a big, complicated piece of software - definitely not without its own set of headaches.

  2. Not working for me! I have deleted the workspace and still got nothing. Flash builder won't start. Its stuck on the splash screen.