Hi, The issue is these lines in the installer.xml
<target name="get-data"> <tstamp /> <property name="ts" value="${DSTAMP}${TSTAMP}" /> <!-- <property name="xml.properties" value="http://flex.apache.org/installer/sdk-installer-config-4.0.xml?ts=${ts}" /> <get src="${xml.properties}" dest="${basedir}/sdk-installer-config-4.0.xml" /> —> It looking locally for the sdk-installer-config-4.0.xml which doesn’t exist in the RC1 artifact. Thanks, Justin