Index: trunk/packages/sipb-xen-remote-server/files/usr/sbin/sipb-xen-remote-listvms
===================================================================
--- trunk/packages/sipb-xen-remote-server/files/usr/sbin/sipb-xen-remote-listvms	(revision 561)
+++ trunk/packages/sipb-xen-remote-server/files/usr/sbin/sipb-xen-remote-listvms	(revision 562)
@@ -1,3 +1,3 @@
-#!/usr/bin/env python2.5
+#!/usr/bin/python
 
 """
@@ -7,5 +7,18 @@
 
 from itertools import chain
-from subprocess import CalledProcessError, PIPE, Popen
+from subprocess import PIPE, Popen
+try:
+    from subprocess import CalledProcessError
+except ImportError:
+    # Python 2.4 doesn't implement CalledProcessError
+    class CalledProcessError(Exception):
+        """This exception is raised when a process run by check_call() returns
+        a non-zero exit status. The exit status will be stored in the
+        returncode attribute."""
+        def __init__(self, returncode, cmd):
+            self.returncode = returncode
+            self.cmd = cmd
+        def __str__(self):
+            return "Command '%s' returned non-zero exit status %d" % (self.cmd, self.returncode)
 from sys import argv, stdout
 from yaml import safe_dump, safe_load