Error 25133 when trying to upgrade to SRM 8.1

Hello,

  I'm at the tail end of completing an upgrade from SRM/SRA 5.5.1 to 8.1 but am getting an error when installing SRM 8.1 The error message is:

"Error 25133: VMware vCenter Site Recovery Manager service failed to start. Check that all required Windows services are running. View the server log for more information."

I've checked all the dependent services and they are running. There doesn't seem to be any information on this error message. The SRM log is attached. Nothing in there stands out to me (or Google for that matter). Not sure what other logs I can check. Thanks!