fix pre-req existence checking
diff --git a/releng/maps/build.cfg b/releng/maps/build.cfg
index b329984..41cf4a0 100644
--- a/releng/maps/build.cfg
+++ b/releng/maps/build.cfg
@@ -1,5 +1,4 @@
-builderVersion=v200801130055
-#builderVersion=v200801111830
+builderVersion=v200801130145
 
 eclipse.builder=org.eclipse.releng.basebuilder
 eclipse.builder.version=M3_34