In addition you must have a scratch partition available on the ESXi host.
You will need to remove the previous unlocker for this to work correctly. Please carefully read the readme.txt file. Should fix the issues when vCenter code added to the ESXi host. Version 1.3.0 posted with new method of running the patcher on ESXi.
The code has changed and new unlocker code needs to be written. The current version of the unlocker will not be able to unlock Workstation 11.
