I dont know what the offical patch will be but here is a workaround I found translating a German document I found.
/etc/init.d/vmware-mgmt stop
vi /etc/vmware/hostd/authorization.xml
edit the line that talks about
<NextAceId>11</NextAceId>
incrament it past the current "root" or administrator account you have.
so it now reads
<NextAceId>12</NextAceId>
I also deleted
<NextRoleId>11</NextRoleId>
doesnt seem to be used anywhere
I then
/etc/init.d/vmware-mgmt start
and relogged in.
I was then able to add users. Looks like the initial script doesnt incrament well and keeps trying to add you to an existing userid. I dunno why they didnt just use the userid for the users in /etc/password or ldap.
hope that helps