diff -r 0e5fbb71b791 download.py
--- a/download.py	Sun Jan 11 23:29:17 2009 +0000
+++ b/download.py	Tue Jan 13 06:39:42 2009 -0800
@@ -123,6 +123,12 @@ def get_nsc(ns3_dir):
     # Get NSC
     #
     """
+    # Skip downloading NSC on OS X due to HFS+ case insensitive issues
+    arch = os.uname()[0]
+    print arch
+    if arch == 'Darwin':
+        print "Architecture does not support NSC... skipping"
+        return 
     # (peek into the ns-3 wscript and extract the required nsc version)
     internet_stack_wscript = open(os.path.join(ns3_dir, "src", "internet-stack", "wscript"), "rt")
     required_nsc_version = None