Can I use Flex Builder 3 with Mac OS X 10.7 Lion?

There are rumors on the web that Adobe's Flex Builder 3 is incompatible with Mac OS X Lion. Is that true or can I upgrade to Lion and keep using Flex Builder 3?

Flex Builder 3 is not compatible with Lion, nor are most later FlashBuilder releases. The most recent version of Flash Builder(4.5.1) has had a lot of work done by the Adobe team to fix those issues, and they have recently (July 27th) released an updated guidance on the remaining issues.

http://blogs.adobe.com/flex/2011/07/updated-guidance-on-flash-builder-4-5-compatibility-with-mac-os-x-10-7.html

Adobe does not recommend updating to Lion for owners of the earlier products, as mentioned in the guidance.

I was able to install FB3 on OS X Lion. The problem is not the FB3, but the InstallAnywhere package. Here's how...

1. I found another app that has a "JavaApplicationStub" that worked on Lion. I used Cinderella (http://cinderella.de/files/release/Cinderella2.zip).

2. Find the app that works in the Finder. Right-click (Control-click) and choose "Show Package Contents". Go to the Contents/MacOS directory. Copy "JavaApplicationStub" to your Desktop.

3. Copy the "FB3_Mac_Installer.app" from the dmg onto your Desktop.

4. Right-click (Control-click) and choose "Show Package Contents" on "FB3_Mac_Installer". Go to the Contents/MacOS directory.

5. Copy the "JavaApplicationStub" from the Desktop to the FB3_Mac_Installer.app/Contents/MacOS/ folder. Delete the executable named "FB3_Mac_Installer" and rename "JavaApplicationStub" to "FB3_Mac_Installer"

6. Run the FB3_Mac_Installer.app on your Desktop.

No, Flex Builder 3 is not compatible with Lion.