Error - Perl execution failed

We are logged in as the admin users with full permissions. When we click on the "Create virtual server" link we get the following...

Error - Perl execution failed

Sort subroutine didn't return a numeric value at /Path/webmin-1.470/virtual-server/domain_form.cgi line 235.

Looking through the code it seems to be running into problems about plans.

Any Ideas what is causing this?

Status: 
Closed (fixed)