diff --git a/examples/initExample.py b/examples/initExample.py
index f95a0cb0..38dd3edc 100644
--- a/examples/initExample.py
+++ b/examples/initExample.py
@@ -2,10 +2,10 @@
 import sys, os
 path = os.path.abspath(os.path.join(os.path.dirname(__file__), '..'))
 path.rstrip(os.path.sep)
-if path.endswith('pyqtgraph'):
-    sys.path.insert(0, os.path.join(path, '..'))  ## examples installed inside pyqtgraph package
-elif 'pyqtgraph' in os.listdir(path):
+if 'pyqtgraph' in os.listdir(path):
     sys.path.insert(0, path) ## examples adjacent to pyqtgraph (as in source)
+elif path.endswith('pyqtgraph'):
+    sys.path.insert(0, os.path.abspath(os.path.join(path, '..')))  ## examples installed inside pyqtgraph package
 
 ## should force example to use PySide instead of PyQt
 if 'pyside' in sys.argv:  
diff --git a/setup.py b/setup.py
index e4dc07cf..64d22ba2 100644
--- a/setup.py
+++ b/setup.py
@@ -1,11 +1,19 @@
 from distutils.core import setup
+import distutils.dir_util
 import os
 
 ## generate list of all sub-packages
-subdirs = [i[0].split(os.path.sep)[1:] for i in os.walk('./pyqtgraph') if '__init__.py' in i[2]]
-subdirs = filter(lambda p: len(p) == 1 or p[1] != 'build', subdirs)
+path = os.path.abspath(os.path.dirname(__file__))
+n = len(path.split(os.path.sep))
+subdirs = [i[0].split(os.path.sep)[n:] for i in os.walk(os.path.join(path, 'pyqtgraph')) if '__init__.py' in i[2]]
 all_packages = ['.'.join(p) for p in subdirs] + ['pyqtgraph.examples']
 
+
+## Make sure build directory is clean before installing
+buildPath = os.path.join(path, 'build')
+if os.path.isdir(buildPath):
+    distutils.dir_util.remove_tree(buildPath)
+
 setup(name='pyqtgraph',
     version='',
     description='Scientific Graphics and GUI Library for Python',
@@ -23,6 +31,9 @@ It is intended for use in mathematics / scientific / engineering applications. D
     #package_data={'pyqtgraph': ['graphicsItems/PlotItem/*.png']},
     classifiers = [
         "Programming Language :: Python",
+        "Programming Language :: Python :: 2",
+        "Programming Language :: Python :: 2.6",
+        "Programming Language :: Python :: 2.7",
         "Programming Language :: Python :: 3",
         "Development Status :: 4 - Beta",
         "Environment :: Other Environment",