VMWare Esxi 5.0.0 managed by VSphere (VMware vCenter Server 5.0.0.16964)
CentOS release 6.2 (Final)
Foreman 1.2 RC3

Clicking the Edit button for both "PXELinux Template" and "provision Template" for a created vmware host works.
url's:
https://foreman.localdomain/config_templates/1-kickstart-default-pxelinux/edit
https://foreman.localdomain/config_templates/4-kickstart-default/edit

Also clicking the "PXELinux Template" Review button for created vmware host works
url:
https://foreman.localdomain/unattended/PXELinux?spoof=192.168.88.3

I then get the contents of the template:

default linux
  label linux
  kernel 
  append initrd= ks=http://foreman.localdomain/unattended/provision ksdevice=bootif network kssendmac

But when I click the "provision Template" for the same vmware host:
url:
https://foreman.localdomain/unattended/provision?spoof=192.168.88.3

I get HTTP-error 500 - Internal Server Error

The kickstarted VM is also unable to retrieve the needed kickstart file during boot.

I attached debug log wich includes all 4 actions as (production-500-error.log)