The type doesn’t support the nested “resources”

To use this code, you need to have the file build.number containging: major.number=1 minor.number=0 hotfix.number=0 revision.number=0 continuous.number=0 Then the following 3 targets:   <taskdef resource=”net/sf/antcontrib/antlib.xml”/> <taskdef name=”unset” classname=”ise.antelope.tasks.Unset”/>     <target name=”initBuildNum” description=”Get current build number properties”> <property file=”build.number”/> <var name=”next.major” value=”${major.number}”/> <var name=”next.minor” value=”${minor.number}”/> <var name=”next.hotfix” value=”${hotfix.number}”/> <var name=”next.revision” value=”${revision.number}”/> <var name=”next.continuous” value=”${continuous.number}”/> </target>     <target name=”getBuildNum”>…