diff --git a/Mac/scripts/fullbuild.py b/Mac/scripts/fullbuild.py
index d3a5a13..43d69e6 100644
--- a/Mac/scripts/fullbuild.py
+++ b/Mac/scripts/fullbuild.py
@@ -18,6 +18,7 @@
 import EasyDialogs
 import re
 import string
+import genpluginprojects
 
 import aetools
 import AppleEvents
@@ -377,6 +378,8 @@
 	if not ok:
 		sys.exit(0)
 	dir = dir.as_pathname()
+	# Set genpluginprojects to use this folder (slight hack)
+	genpluginprojects.PYTHONDIR = dir
 	
 	todo = handle_dialog(os.path.join(dir, MACBUILDNO))
 		
diff --git a/Mac/scripts/genpluginprojects.py b/Mac/scripts/genpluginprojects.py
index ead0c24..0ee6bce 100644
--- a/Mac/scripts/genpluginprojects.py
+++ b/Mac/scripts/genpluginprojects.py
@@ -3,7 +3,8 @@
 import os
 import string
 
-PROJECTDIR = os.path.join(sys.prefix, ":Mac:Build")
+PYTHONDIR = sys.prefix
+PROJECTDIR = os.path.join(PYTHONDIR, ":Mac:Build")
 MODULEDIRS = [	# Relative to projectdirs
 	"::Modules:%s",
 	"::Modules",