byobu-select-session never lists sessions

It seems like 'screen -ls' returns non-zero in every situation i can see.

revno 1612 on trunk started requiring it to return 0, and that means it never shows sessions in the list.

revno: 1612
committer: Dustin Kirkland <email address hidden>
branch nick: byobu
timestamp: Sat 2011-08-20 11:33:47 -0700
message:
  * usr/bin/byobu-select-session:
    - check exist status of session listing
diff:
=== modified file 'usr/bin/byobu-select-session'
--- usr/bin/byobu-select-session 2011-08-20 17:07:05 +0000
+++ usr/bin/byobu-select-session 2011-08-20 18:33:47 +0000
@@ -33,9 +33,9 @@
        sessions = []
        i = 0
        if commands.getstatusoutput("command -v screen")[0] == 0:
- output = commands.getoutput("screen -ls")
- if output:
- for s in output.split("\n"):
+ output = commands.getstatusoutput("screen -ls")
+ if output[0] == 0:
+ for s in output[1].split("\n"):

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: byobu 4.33-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-11.18-generic 3.0.4
Uname: Linux 3.0.0-11-generic x86_64
ApportVersion: 1.23-0ubuntu1
Architecture: amd64
Date: Wed Sep 21 14:11:08 2011
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta amd64 (20100318)
PackageArchitecture: all
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, user)
 LANG=en_US.UTF-8
SourcePackage: byobu
UpgradeStatus: Upgraded to oneiric on 2010-11-15 (309 days ago)