60872 egroupware v1.0 login problem

We have installed egroupware v1.0, (a php app on UNIX ) [login to view URL] The problem is, user goes to create a account, they are emailed a confirmation email with a link, when the user clicks on the link to activate the account they get a message: "Sorry, we are having a problem activating your account. Note that links sent by e-mail are only valid during two hours. If you think this delay was expired, just retry. Otherwise, please contact the site administrator." So users are unable to create accounts, this needs to be fixed so users can create accounts.