more fixes
diff --git a/flex-installer/build.xml b/flex-installer/build.xml
index db79bfc..f8994ff 100644
--- a/flex-installer/build.xml
+++ b/flex-installer/build.xml
@@ -674,14 +674,14 @@
 
     <target name="create-SHA-512" >
         <echo message="Generating SHA-512 hashes for release artifacts"/>
-        <checksum algorithm="SHA-512" file="${RELEASE_DIR}/${source.kit}.zip" forceOverwrite="yes"/>
-        <checksum algorithm="SHA-512" file="${RELEASE_DIR}/${source.kit}.tar.gz" forceOverwrite="yes"/>
-        <checksum algorithm="SHA-512" file="${RELEASE_DIR}/${binary.kit}.${extension}" forceOverwrite="yes"/>
+        <checksum algorithm="SHA-512" fileext=".sha512" file="${RELEASE_DIR}/${source.kit}.zip" forceOverwrite="yes"/>
+        <checksum algorithm="SHA-512" fileext=".sha512" file="${RELEASE_DIR}/${source.kit}.tar.gz" forceOverwrite="yes"/>
+        <checksum algorithm="SHA-512" fileext=".sha512" file="${RELEASE_DIR}/${binary.kit}.${extension}" forceOverwrite="yes"/>
         <antcall target="create-SHA-512-64bit" />
     </target>
     
     <target name="create-SHA-512-64bit" if="isWindows">
-        <checksum algorithm="SHA-512" file="${RELEASE_DIR}/${kit.prefix64}-bin.zip" forceOverwrite="yes"/>
+        <checksum algorithm="SHA-512" fileext=".sha512" file="${RELEASE_DIR}/${kit.prefix64}-bin.zip" forceOverwrite="yes"/>
     </target>
 
     <target name="sign" depends="create-SHA-512">
diff --git a/flex-installer/releasecandidate.xml b/flex-installer/releasecandidate.xml
index ae1d2c2..02ea3cd 100644
--- a/flex-installer/releasecandidate.xml
+++ b/flex-installer/releasecandidate.xml
@@ -221,7 +221,6 @@
 			<arg value="--rebase" />
 		</exec>
 		<ant antfile="build.xml" target="release" />
-        <ant antfile="build.xml" target="create-md5s" />
 		<mkdir dir="${dist.dev}/flex/installer/${release.version}/rc${rc}/binaries" />
 		<copy todir="${dist.dev}/flex/installer/${release.version}/rc${rc}" >
 			<fileset dir="${basedir}/release" >