ubuntuone-syncdaemon crashed with ImportError in /usr/lib/python2.7/dist-packages/ubuntuone-storage-protocol/ubuntuone/storageprotocol/protocol_pb2.py: No module named google.protobuf

This appears to be because /usr/lib/python2.7/dist-packages/google/__init__.py is missing (bug 583426)?

ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: ubuntuone-client 3.99.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.5.0-1.1-generic 3.5.0-rc3
Uname: Linux 3.5.0-1-generic x86_64
NonfreeKernelModules: openafs
ApportVersion: 2.2.5-0ubuntu1
Architecture: amd64
Date: Mon Jun 25 00:26:11 2012
EcryptfsInUse: Yes
ExecutablePath: /usr/lib/ubuntuone-client/ubuntuone-syncdaemon
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20101202)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/lib/ubuntuone-client/ubuntuone-syncdaemon
PythonArgs: ['/usr/lib/ubuntuone-client/ubuntuone-syncdaemon']
SourcePackage: ubuntuone-client
Title: ubuntuone-syncdaemon crashed with ImportError in /usr/lib/python2.7/dist-packages/ubuntuone-storage-protocol/ubuntuone/storageprotocol/protocol_pb2.py: No module named google.protobuf
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout fuse libvirtd lpadmin plugdev sambashare sudo