Air 22 SDK - windows ADT could not generate timestamp

I am not entirely sure this is related to sdk 22, but after I upgraded, and used my adt script on windows to generate a windows app, I received the following error:

Could not generate timestamp: java.lang.RuntimeException: Could not generate DH keypair

Note that when I use adt on the same windows computer to generate apk or ipa, it works fine. When I use adt on mac to generate mac app, it works fine. It is just when I use adt on windows to generate a windows app. The computer is attached to the internet.

adt.bat -package -storetype pkcs12 -keystore cert.p12 -target bundle AppName AppName-app.xml AppName.swf icons