Upgradebootstrap has failed with unknown exception

I'm stumped.  Running SharePoint 2013 over Hyper-V with the following topology:

1 Database server

3 Application/WFE servers (1 for Central Admin, some BI stuff, 1 for Search, 1 for Project Server)

It's a very basic test farm, running 2013 with SP1, only one site collection on port 80.  Trying to set up Project Server on a separate server from the rest of my test farm.  Installed Project Server, no problems.  Got the "Failed to initiate the upgrade sequence" error.  Discovered I needed to install Project Server SP1 so did that, no problems.  Still getting the error.  The logs give me nothing to do on, other that there's an SPUpgradeException error thrown, that's all.

Anybody know what to do next?  Thanks

Kevin McCarty