Some of you might have noticed that we broke the AIR auto-update UI packaged with the Flex SDK with our release of the 3.5 Flex SDK. We got about 10 bugs all related to this subject. Oops…  Anyways, the problem has been resolved and a new 3.5a SDK has been released. Here is the official word:

“The Flex team has released an update to the 3.5 SDK that addresses an issue with the Flex-based AIR auto-update UI packaged within the SDK (SDK-24766). The refreshed build, SDK 3.5a,  has only a few files modified in order to fix this issue and this change does not affect the signing and caching of the SDK 3.5 RSLs originally released in December.

We encourage all developers using SDK 3.5 to upgrade their build to SDK 3.5a to continue their development. The SDK 3.5a can be found in the “Latest Milestone Release Build” table here: http://opensource.adobe.com/wiki/display/flexsdk/Download+Flex+3.”