Are you visiting this forum using the browser in the Community section of PT4?
If it is in a separate browser that really shouldn't be affecting PT4.
Assuming you're browsing within PT4..
When you restart PT4 does it offer to upload a crash report? If so, and you haven't already done that please do - it goes directly to our development team and will help considerably in an attempt to find out what happens.
If not, please restart PT4 and reproduce the problem then attach the PokerTracker4.log file from C:\Users\yourname\AppData\Local\PokerTracker 4\ (which you can access from the PT4 File menu) to a
Support Ticket.
Thanks.