open() now raises IOError, not RuntimeError!
diff --git a/Demo/stdwin/ibrowse/ifile.py b/Demo/stdwin/ibrowse/ifile.py
index 584fb34..1ea880e 100755
--- a/Demo/stdwin/ibrowse/ifile.py
+++ b/Demo/stdwin/ibrowse/ifile.py
@@ -311,7 +311,7 @@
 	for dir in INFOPATH:
 		try:
 			return open(dir + file, 'r')
-		except RuntimeError:
+		except IOError:
 			pass
 	raise NoSuchFile, file