Flight was ok but at the end after pressing the approach button the program crashed, I had a valid flightplan and Star/Runway

 

regards Wim

If you're running on the latest update (0027J), then please send the P2A Log file for the flight to [email protected] so I can look for errors.

P2A Log files are located in: 
C:\Users\<UserName>\AppData\Roaming\P2A_300\Logs 
where <UserName> is your PC user name. 
Portions of the path may be hidden by default, so be sure Windows Explorer has Show Hidden Items checked in the View tab.
A new one is created each time you start Pilot2ATC, and is closed when you shut it down. So if you take the most recent one after you have the error and after you shut down P2A, you should have the correct one.  
 

Dave