Index: /issm/trunk-jpl/scripts/DownloadExternalPackage2.py
===================================================================
--- /issm/trunk-jpl/scripts/DownloadExternalPackage2.py	(revision 14654)
+++ /issm/trunk-jpl/scripts/DownloadExternalPackage2.py	(revision 14654)
@@ -0,0 +1,37 @@
+#!/usr/bin/env python
+# -*- coding: ISO-8859-1 -*-
+
+import os,sys
+import urllib
+
+#Check inputs
+if(len(sys.argv)!=3): raise NameError('usage: ./DownloadExternalPackage.py URL localfile')
+
+url=sys.argv[1];
+localFile=sys.argv[2]
+
+#Remove file if it already exists
+if os.path.exists(localFile):
+	print "File "+ localFile +" already exists and will not be downloaded..."
+	sys.exit()
+
+#Try to download from url
+httpfail=-1
+try:
+	print "Fetching %s" % localFile
+	urllib.urlretrieve(url,localFile)
+	httpfail=0
+except Exception, e:
+	httpfail=1
+
+#Error message in case it failed
+if (httpfail):
+	failureMessage = '''
+===========================================================================
+Unable to download package %s from: %s
+* If URL specified manually - perhaps there is a typo?
+* If your network is disconnected - please reconnect 
+* Alternatively, you can download the above URL manually
+===========================================================================
+''' % (localFile,url)
+	raise RuntimeError(failureMessage)