Perl execution failed?

When trying to import a CPanel backup.. I get this error:

Moving server owner's mailbox ..
HTTP/1.0 500 Perl execution failed Server: MiniServ/0.01 Date: Fri, 2 Nov 2007 03:05:13 GMT Content-type: text/html Connection: close

Error - Perl execution failed
Undefined subroutine &mailboxes::mailbox_move_folder called at /usr/share/webmin/virtual-server/migration-cpanel.pl line 577.

Is this a bug?

Status: 
Closed (fixed)