This release supports only Flex 4.0 and Flash Builder 4.0 Pre-Release builds 01/19/2010 or later.

Potomac builder memory usage has been streamlined in this version. Memory usage during compilation should be significantly reduced.

In a very specific case, a bundle would fail to load. This occurred when an [Injectable] was bound to a class in another bundle, and the calling bundle did not include the [Injectable]‘s bundle in its dependencies list (it should not have to). Ths bug is fixed in this build.

Some efforts have been made to cut down on the code model errors that occur during multi-project cleans. While not completely solved, users should see the occurrence of these errors significantly reduced.