Prod.properties missing when "mvn install"

Hi,
i'm trying to get greenhouse working, without success.
I downloaded android client here https://github.com/SpringSource/greenhouse-android, but when i try "mvn install" i get:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-resources-plugin:2.5:resources (default) on project greenhouse: Error loading property file '/Users/Andrea/Downloads/SpringSource-greenhouse-android-14338c9/filters/prod.properties' -> [Help 1]

I'm new to Spring, and to Maven too, so I don't know why prod.properties is needed and what's his purpose.
Why it's not included in default greenhouse distribution?

I tried to copy the content of dev.properties in a new prod.properties file. After this "mvn install" works fine but when i try to lunch android app i get this exception:

FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to create application com.springsource.greenhouse.MainApplication: java.lang.IllegalArgumentException: Non-hex character in input: ${connection.repository.encryption.salt}

Do you now why greenhouse is hot working (i haven't modified anything!!)?