Started on the 2.1a2 installer.
diff --git a/Mac/Distributions/dev.exclude b/Mac/Distributions/dev.exclude
index 8f74412..939f353 100644
--- a/Mac/Distributions/dev.exclude
+++ b/Mac/Distributions/dev.exclude
@@ -11,6 +11,7 @@
 *.xSYM
 *Icon
 .#*
+.DS_Store
 .cvsignore
 @*
 CVS