LogCat?

I noticed a problem that sometimes when I try to load waypoints to the drone DP quits. I often see people mention posting a log file after they have a problem?? aka files inside a folder called LogCat? Is that what is helpful to determine what a problem might be?? Secondly would I be correct in saying that the very last file recored immediately after DP quit would be what is needed or would it be best to send more than that? Thx

Those files contain debug information about the crash, posting the last one is sufficient.