fix, thanks to David Carr
diff --git a/pyparallel/setup.py b/pyparallel/setup.py
index c537965..d4c3c4b 100644
--- a/pyparallel/setup.py
+++ b/pyparallel/setup.py
@@ -16,5 +16,5 @@
     packages=['parallel'],
     license="Python",
     long_description="Python Parallel Port Extension for Win32, Linux, BSD",
-    package_data = data_files
+    package_data = {}
 )