diff --git a/CMakeLists.txt b/CMakeLists.txt
index 98d65b2..edd6439 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -139,7 +139,7 @@ endif ()
 # Diagnostics
 #   Enable building with logs, some memory diagnostics.
 #------------------------------------------------------------------------
-option( ENABLE_DEBUG_LOG    "Set ON to output debugging messages."          ON  )
+option( ENABLE_DEBUG_LOG    "Set ON to output debugging messages."          OFF )
 option( ENABLE_ALLOC_DEBUG  "Set ON to output node allocation diagnostics." OFF )
 option( ENABLE_MEMORY_DEBUG "Set ON to output some memory diagnostics."     OFF )
 
diff --git a/version.txt b/version.txt
index 49a0268..674d2e2 100644
--- a/version.txt
+++ b/version.txt
@@ -1,2 +1,2 @@
-5.5.62
-2017.10.08
+5.5.63
+2017.10.09