AIR for iOS unable to publish

I've been using the publish feature for a while with the new AIR3.1 SDK (winxp)

Everything worked just fine, both command-line and the Flash CS5.5 publish process did their job.

But since today for no particular reason I cannot publish a IPA file anymore. If I try to create one using Flash CS5.5 the "Publishing..." dialog indicator just sits there and even after 1 hour no results what so ever. If I run the adt.bat with the parameters:

adt -package

-target ipa-app-store

-storetype pkcs12 -keystore "C"\location\of\cert.p12"

-storepass pass

-provisioning-profile "C:\location\of\prov.mobileprovision"

"C:\output\file.ipa"

main-app.xml

main.swf

AppIconsForPublish

Default-Landscape.png

(which always worked)

But now it's just being idle, if I turn on verbose logging I get the following:

...

[Loaded java.util.ArrayList$ListItr from C:\Program Files\Java\jre7\lib\rt.jar]

[Loaded java.lang.ProcessImpl$2 from C:\Program Files\Java\jre7\lib\rt.jar]

[Loaded com.adobe.ucf.Utils$OutputEater from file:/C:/AIR3.1/lib/adt.jar]

I've updated JRE and downloaded the latest AIR runtime, but still I'm not able to publish an ipa file.

Even if I create an empty project and try to publish to an .ipa, no results...

please help me out, we need to launch the iPad app for our client ...