Horribly untested improvement for #555 which I will test momentarily.

scripts/devSetup/directoryController.py

@@ -20,23 +20,30 @@ class DirectoryController(object):
     def bin_directory(self):
         return self.root_install_directory
 
+    def mkdir(self, path):
+        if os.path.exists(path):
+            print(u"Skipping creation of " + path + " because it exists.")
+        else:
+            os.mkdir(path)
+        
     def create_directory_in_tmp(self,subdirectory):
-        os.mkdir(self.generate_path_for_directory_in_tmp(subdirectory))
+        path = self.generate_path_for_directory_in_tmp(subdirectory)
+        self.mkdir(path)
 
     def generate_path_for_directory_in_tmp(self,subdirectory):
         return self.tmp_directory + os.sep + subdirectory
     def create_directory_in_bin(self,subdirectory):
         full_path = self.bin_directory + os.sep + subdirectory
-        os.mkdir(full_path)
+        self.mkdir(full_path)
 
     def create_base_directories(self):
         shutil.rmtree(self.root_dir + os.sep + "coco" + os.sep + "node_modules",ignore_errors=True) #just in case
         try:
-          if os.path.exists(self.tmp_directory):
-            self.remove_tmp_directory()
-          os.mkdir(self.tmp_directory)
+            if os.path.exists(self.tmp_directory):
+                self.remove_tmp_directory()
+            os.mkdir(self.tmp_directory)
         except:
-          raise errors.CoCoError(u"There was an error creating the directory structure, do you have correct permissions? Please remove all and start over.")
+            raise errors.CoCoError(u"There was an error creating the directory structure, do you have correct permissions? Please remove all and start over.")
 
     def remove_directories(self):
         shutil.rmtree(self.bin_directory + os.sep + "node",ignore_errors=True)