Please restart PT4 using the Logging Enabled link on your Start Menu and reproduce this problem. Then please send us the PokerTracker4.log file via a
support ticket so that we can investigate this further for you. You can find this file by clicking File -> Open User Data Folder in the main PT4 window. The file we need is the text file called PokerTracker that's in the folder that appears.
Your log file will be a big help here in figuring out what is going wrong.