Webmin Upgrade Error

Hi, I just tried the webmin-virtual-server (4.06.gpl => 4.07.gpl) upgrade, and got an error:

Argument "2.23-05" isn't numeric in numeric lt (<) at /usr/share/webmin/webalizer/install_check.pl line 17.

Full apt-get -V upgrade output below.

The following packages will be upgraded:
libopenjpeg2 (1.3+dfsg-4.7 => 1.3+dfsg-4.8)
webmin-virtual-server (4.06.gpl => 4.07.gpl)
2 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 2,214 kB of archives.
After this operation, 0 B of additional disk space will be used.
Do you want to continue [Y/n]? y
Get:1 http://software.virtualmin.com/gpl/debian/ virtualmin-universal/main webmin-virtual-server all 4.07.gpl [2,126 kB]
Get:2 http://security.debian.org/ wheezy/updates/main libopenjpeg2 amd64 1.3+dfsg-4.8 [87.5 kB]
Fetched 2,214 kB in 1s (1,840 kB/s)
Reading changelogs... Done
(Reading database ... 111758 files and directories currently installed.)
Preparing to replace webmin-virtual-server 4.06.gpl (using .../webmin-virtual-server_4.07.gpl_all.deb) ...
Unpacking replacement webmin-virtual-server ...
Preparing to replace libopenjpeg2:amd64 1.3+dfsg-4.7 (using .../libopenjpeg2_1.3+dfsg-4.8_amd64.deb) ...
Unpacking replacement libopenjpeg2:amd64 ...
Setting up webmin-virtual-server (4.07.gpl) ...

Argument "2.23-05" isn't numeric in numeric lt (<) at /usr/share/webmin/webalizer/install_check.pl line 17.
Setting up libopenjpeg2:amd64 (1.3+dfsg-4.8) ...