Occasionally in software things go wrong. This is not intentional but with data recovery one is never in control of the data or media being read. There can also be problems with users not understanding the best procedure, or even pressing the wrong buttons.
The trace file is a simple text file (it stores no user data) but does track the user operations. It can therefore be very useful in isolating problems and giving a clear record of the 'buttons' pressed. With any program it can be difficult to remember exactly what menus were seen before a problem, or which options were selected..
The trace file is therefore a simple file to record user actions. There may be up to 9 such files stored in the log directory. A new file is started each time the program starts, and each numbered file is overwritten in sequence. If you do experience a problem, CnW support might request to see the latest such file. The contents may not make total sense to a user, but can be considerable help to CnW Recovery.