If you have installed the latest version correctly then this sounds like a different issue from that described by the OP. So we can investigate please
enable logging, reproduce this problem, take a
screenshot of any error message if applicable and then send that to us in a
Support Ticket with your log file:
C:\Users\{Windows Login}\AppData\Local\PokerTracker 4\Logs\PokerTracker4.log (Windows)
\Users\{Mac Login}\Library\Application Support\PokerTracker 4\Logs\PokerTracker4.log (Mac)
If you do not see the AppData folder in Windows File Explorer then please refer to
this guide.