Following the release of Mac OS X 10.7 (Lion) last week, Adobe issued guidance recommending that Flash Builder customers should not upgrade to the latest version of the operating system due to compatibility issues.
This guidance was based upon testing with earlier pre-release builds of Lion made available to Adobe and other software vendors. Now that we have had an opportunity to undertake further testing with the final release of Mac OS X 10.7, we are pleased to report that there are only minor usability issues when using Flash Builder 4.5.1 on Mac OS X 10.7 and, as such, we will be updating our previous statement to confirm compatibility of these releases.
There is one issue that affects new installations of Flash Builder 4.5.1 on Mac OS X 10.7 – 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.
There is also 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 Adobe.com.
Please note that Flash Builder 4 remains incompatible with Mac OS X 10.7. Upgrades from Flash Builder 4.0 to Flash Builder 4.5.1 are available for $49.