The module is working now. Hock Sik, my collegue, found the problem. I think it was a typo that worked in the older version of webmin. The newer version is more strict. Here is the diff.

------------- start ------------------------
$ diff pure-users.cgi pure-users.cgi.org
474c474
<     print "<tr $tb><td colspan=2 align=center><b>$login</b></td></tr>";
---
>     print "<tr $tb><td colspan=2 align=center><b>$login</b></td></tr>",
------------- end --------------------------

It was the last ",". It should have been a ";".

Hope this helps others.

Here is the updated Pureftpd Webmin module.

http://www.mindmedia.com.sg/attachments/pureftpd.wbm.gz