I have installed webcalendar without any problem , but it won't update to version 1.04. While it showing that it was updated, it in fact is not. The old version 1.01 is still showing up on the script when I load the URL and on the cPanel.
I would suggest you to send a mail to vps[at]bodhost.com with the complete login details of your VPS and the steps to re-create the problem at our end so that we can investigate and try to fix the problem.