diff --git a/Columbus_manual.pdf b/Columbus_manual.pdf
index aa7b4ec..2ec7fed 100644
Binary files a/Columbus_manual.pdf and b/Columbus_manual.pdf differ
diff --git a/Makefile b/Makefile
index 8239e72..89ccac7 100644
--- a/Makefile
+++ b/Makefile
@@ -8,7 +8,7 @@ CATEGORIES=2
 DEF = -D MAXKMERLENGTH=$(MAXKMERLENGTH) -D CATEGORIES=$(CATEGORIES)
 
 # Mac OS users: uncomment the following lines
-# CFLAGS = -Wall -m64
+CFLAGS = -Wall -m64
 
 # Sparc/Solaris users: uncomment the following line
 # CFLAGS = -Wall -m64
diff --git a/Manual.pdf b/Manual.pdf
index a80aa89..355108a 100644
Binary files a/Manual.pdf and b/Manual.pdf differ
diff --git a/src/globals.h b/src/globals.h
index d25eb5a..c793db5 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -38,7 +38,7 @@ Copyright 2007, 2008 Daniel Zerbino (zerbino@ebi.ac.uk)
 
 #define VERSION_NUMBER 1
 #define RELEASE_NUMBER 2
-#define UPDATE_NUMBER 9
+#define UPDATE_NUMBER 10
 
 #define MAXLINE 5000