From 3f2ba6f040c9a1c7ca50430b7c7369a60b6092a7 Mon Sep 17 00:00:00 2001
From: Daniel Lindsley <daniel@toastdriven.com>
Date: Mon, 17 Mar 2014 13:55:27 -0700
Subject: [PATCH] Fixed part of roboto for euca2ools.

Verified on euca2ools 2.1.4.
---
 boto/roboto/param.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/boto/roboto/param.py b/boto/roboto/param.py
index ed3e6be9b9..35a25b4af5 100644
--- a/boto/roboto/param.py
+++ b/boto/roboto/param.py
@@ -46,7 +46,7 @@ def convert_boolean(cls, param, value):
 
     @classmethod
     def convert_file(cls, param, value):
-        if os.path.isfile(value):
+        if os.path.exists(value) and not os.path.isdir(value):
             return value
         raise ValueError