enable the new customBuildCallbacks
diff --git a/plugins/org.eclipse.objectteams.runtime/build.properties b/plugins/org.eclipse.objectteams.runtime/build.properties
index ba784f2..a65fd4d 100644
--- a/plugins/org.eclipse.objectteams.runtime/build.properties
+++ b/plugins/org.eclipse.objectteams.runtime/build.properties
@@ -1,3 +1,4 @@
+customBuildCallbacks=customBuildCallbacks.xml
 source.. = src/
 output.. = bin/
 bin.includes = META-INF/,\