Index: root/xen-unstable.hg/tools/python/xen/xm/cfgbootpolicy.py
===================================================================
--- root.orig/xen-unstable.hg/tools/python/xen/xm/cfgbootpolicy.py
+++ root/xen-unstable.hg/tools/python/xen/xm/cfgbootpolicy.py
@@ -70,7 +70,7 @@ def determine_kernelversion(user_specifi
                 within_xen_title = 0
                 within_xen_entry = 0
     if len(version_list) > 1:
-        err("Cannot decide between entries for kernels: " + version_list)
+        err("Cannot decide between entries for kernels %s " % version_list)
     elif len(version_list) == 0:
         err("Cannot find a boot entry candidate (please create a Xen boot entry first).")
     else: