Upgrading from v4 to v5-0-1-21359-BETA

Hi all,

I've been trying to update my Server's LoadBalancing version. Although I install it with no issues, the service is not starting/running.

In Window's Event Viewer, I see the following error:
"The Photon Socket Server: LoadBalancing service terminated with the following service-specific error:
The previous ownership of this semaphore has ended."

Also, the logs directory inside 'deploy' is not created.

Any ideas of what is going on?