I want to build my ios-apps Appstore-ready directly from the command line with the mdtool from MonoTouch (Xamarin) so that Jenkins can kick in and produce the uploadable package right away.
I use the following command:
'/Applications/Xamarin Studio.app/Contents/MacOS/mdtool' -v build '--configuration:AppStore|iPhone' MyAppProject.csproj
Now, the build runs, uses my AppStore Provisioning Profile and creates the files in my bin/iPhone/AppStore - folder.
Now, according to the documentation of Xamarin, I should zip the created app-file in the bin/iPhone/AppStore and select it in xCode Application Loader like shown in the screenshot:

But the Application Loader shows every file grayed out, so there is no chance to continue.
What if you rename the .zip extension to .ipa?