diff -up system-config-printer-1.2.0/check-device-ids.py.cdi-filename system-config-printer-1.2.0/check-device-ids.py
--- system-config-printer-1.2.0/check-device-ids.py.cdi-filename	2010-03-19 12:39:49.195620887 +0000
+++ system-config-printer-1.2.0/check-device-ids.py	2010-03-19 12:40:09.012748969 +0000
@@ -115,16 +115,13 @@ makes = ppds.getMakes ()
 
 def driver_uri_to_filename (uri):
     schemeparts = uri.split (':', 2)
-    if len (schemeparts) < 1:
+    if len (schemeparts) < 2:
         return "/usr/share/cups/model/" + uri
 
     scheme = schemeparts[0]
     if scheme != "drv":
         return "/usr/lib/cups/driver/" + scheme
 
-    if len (schemeparts) < 2:
-        return ""
-
     rest = schemeparts[1]
     rest = rest.lstrip ('/')
     parts = rest.split ('/')