Use the new macresource module to open the accompanying resource file (if needed).
diff --git a/Mac/Tools/IDE/PythonIDE.py b/Mac/Tools/IDE/PythonIDE.py
index bc22e79..5ebe97a 100644
--- a/Mac/Tools/IDE/PythonIDE.py
+++ b/Mac/Tools/IDE/PythonIDE.py
@@ -13,25 +13,17 @@
 	from Carbon import Qd, QuickDraw
 	Qd.SetCursor(Qd.GetCursor(QuickDraw.watchCursor).data)
 	
-	from Carbon import Res
+	import macresource
 	import sys, os
-	try:
-		Res.GetResource('DITL', 468)
-	except Res.Error:
-		# we're not an applet
-		Res.FSpOpenResFile(os.path.join(sys.exec_prefix, ":Mac:Tools:IDE:PythonIDE.rsrc"), 1)
-		Res.FSpOpenResFile(os.path.join(sys.exec_prefix, ":Mac:Tools:IDE:Widgets.rsrc"), 1)
+	macresource.need('DITL', 468, "PythonIDE.rsrc")
+	widgetresfile = os.path.join(sys.exec_prefix, ":Mac:Tools:IDE:Widgets.rsrc")
+	refno = macresource.need('CURS', 468, widgetresfile)
+	if refno:
+		# We're not a fullblown application
 		ide_path = os.path.join(sys.exec_prefix, ":Mac:Tools:IDE")
 	else:
-		# we're an applet
-		try:
-			Res.GetResource('CURS', 468)
-		except Res.Error:
-			Res.FSpOpenResFile(os.path.join(sys.exec_prefix, ":Mac:Tools:IDE:Widgets.rsrc"), 1)
-			ide_path = os.path.join(sys.exec_prefix, ":Mac:Tools:IDE")
-		else:
-			# we're a full blown applet
-			ide_path = sys.argv[0]
+		# We are a fully frozen application
+		ide_path = sys.argv[0]
 	if ide_path not in sys.path:
 		sys.path.insert(0, ide_path)