PokerTracker

First I noticed that during session when I tried to look hand histories PT crashed and now whole software is not opening anymore.

Please open a Support Ticket and report your problem so that we can see what is going on.

See the linked guide for more information, but you can hold down the Option key on your Mac keyboard when you start PokerTracker 4 to temporarly enable logging. This will not enable logging for future use - it only applies each time you start PT4 using this option.