--- a/mercurial/templater.py	Thu Jan 23 14:31:05 2014 -0600
+++ b/mercurial/templater.py	Thu Jan 23 01:29:50 2014 +0100
@@ -447,8 +447,10 @@
 engines = {'default': engine}
 
 def stylelist():
-    path = templatepath()[0]
-    dirlist =  os.listdir(path)
+    paths = templatepath()
+    if not paths:
+        return _('no templates found, try `hg debuginstall` for more info')
+    dirlist =  os.listdir(paths[0])
     stylelist = []
     for file in dirlist:
         split = file.split(".")