The following configuration works you in 6.1:
set "JAVA_OPTS=-Xms64M -Xmx512M -XX:MaxPermSize=256M -Dstat.home="%STAT_HOME%" -Djboss.socket.binding.port-offset=0 -Dmail.mime.charset=ISO-8859-1 -Duser.language=en -Duser.region=US -Dcom.microsoft.tfs.jni.native.base-directory="%STAT_HOME%" -Doracle.jdbc.V8Compatible=true"
The following configuration does not work in 6.1 (even if the location exists):
set "JAVA_OPTS=-Xms64M -Xmx512M -XX:MaxPermSize=256M -Dstat.home="%STAT_HOME%" -Djboss.socket.binding.port-offset=0 -Dmail.mime.charset=ISO-8859-1 -Duser.language=en -Duser.region=US -Dcom.microsoft.tfs.jni.native.base-directory="%STAT_HOME%/tfs-native-dlls" -Doracle.jdbc.V8Compatible=true"