--- a/scripts/install.py	Sat Sep 07 19:10:13 2019 +0200
+++ b/scripts/install.py	Mon Sep 09 18:52:08 2019 +0200
@@ -1056,7 +1056,7 @@
         "icns": "{0}/{1}/Contents/Resources".format(
             macAppBundlePath, macAppBundleName)
     }
-    for directory in directories:
+    for directory in directories.values():
         if not os.path.exists(directory):
             os.makedirs(directory)