Claws-mail freezes when I try to create a filter

When I try to create a filter in Claws-Mail, it freezes. Specifically, it freezes when I attempt to define an action such as "move to Trash Folder". So I cannot create filters.

mark@mark-OptiPlex-755:~$ lsb_release -rd
Description: Ubuntu 13.10
Release: 13.10

Claws-Mail 3.8.1-2

System Information
GTK+ 2.24.20 / GLib 2.38.1
Locale: en_CA.UTF-8 (charset: UTF-8)
Operating System: Linux 3.11.0-18-generic (x86_64)

I expected to be able to create a filter.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: claws-mail 3.8.1-2
ProcVersionSignature: Ubuntu 3.11.0-18.32-generic 3.11.10.4
Uname: Linux 3.11.0-18-generic x86_64
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
Date: Fri Mar 21 19:51:28 2014
InstallationDate: Installed on 2014-03-18 (3 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
MarkForUpload: True
SourcePackage: claws-mail
UpgradeStatus: No upgrade log present (probably fresh install)