Issue creating ipa file

Question

Hi,
Im trying to create a ipa file from an swf created in Flash Builder Burrito using Flex Hero. Im using
./pfi.bat -package -target ipa-test -provisioning-profile FlexProfile.mobileprovision -storetype pkcs12 -keystore Certificates.p12 pass MyFlexApp.ipa MyFlexApp.xml MyFlexApp.swf Icon57.png
Im running in windows XP and getting the following error:
c:\iphonepackagerfiles\iphonepackager\bin\MyFlexApp.ipa: error 301: Application descriptor missing/cannot be opened
My app.xml looks as follows
<?xml version="1.0" encoding="utf-8" standalone="no"?>
<application xmlns="http://ns.adobe.com/air/application/2.5">
    <id>MyFlexApp</id>
    <filename>MyFlexApp</filename>
    <name>MyFlexApp</name>
    <versionNumber>v1</versionNumber>
    <initialWindow>
        <renderMode>gpu</renderMode>
        <content>MyFlexApp.swf</content>
        <fullScreen>true</fullScreen>
        <aspectRatio>portrait</aspectRatio>
        <autoOrients>true</autoOrients>
      </initialWindow>
      <supportedProfiles>mobileDevice</supportedProfiles>
    <icon>
      <image57x57>assets/Icon57.png</image57x57>
     </icon>
    <iPhone>
        <InfoAdditions>
            <![CDATA[
                <key>UIStatusBarStyle</key>
                <string>UIStatusBarStyleBlackOpaque</string>
                <key>UIRequiresPersistentWiFi</key>
                <string>NO</string>
            ]]>
        </InfoAdditions>
     </iPhone>
</application>
Any help would be appreaciated. Thanks in advance
/Eric

Answer 1

One question:
Should i be replacing the air sdk used by Flash Builder with the one that comes with the iphone packager?
/Eric