还是翻墙能解决问题!!!!!!!!!!!!!!!
After updating Flashdevelop i wasn’t able to package my Air applications.
When running PackageApp.bat i got the following error:

Packaging YoutTubeAir.air using certificate “bat\YouTubeAir.p12″…
Could not generate timestamp: handshake alert: unrecognized_name
AIRR setup creation FAILED
Troubleshooting:
– did you build your project in FlashDevelop?
– verify AIR SDK target version in application.xml
Press any key to continue…

I knew the setup was correct so i googled and found the following solution on the FlashDevelop forum:
http://www.flashdevelop.org/community/viewtopic.php?f=13&t=6024&hilit=Could+not+generate+timestamp

I openend bat/Packager.bat in a texteditor and changed this line:

call adt -package %OPTIONS% %SIGNING_OPTIONS% %OUTPUT% %APP_XML% %FILE_OR_DIR%

to

call adt -package -tsa none %OPTIONS% %SIGNING_OPTIONS% %OUTPUT% %APP_XML% %FILE_OR_DIR%

It took me a while to find the solution to this problem so i hope i can help someone out with the same problem.