I got your data file - thanks for sending it.<br><br>It turns out that there is a bug in the current versions of Ping Plotter. This bug exhibits itself in that the log file isn't written - and happens when there are hosts missing in your route. In the file you sent me, hop 1 had a host, and hop 12 had a host - the rest of the hops were not responding. Well, Ping Plotter didn't like this (for writing the log file at least...).<br><br>There is no workaround for this problem. It's a bug plain and simple. I'll see about getting this fix into the next release, but can't guarantee it. If this is critical for you, let me know and I'll see about sending you an interim release that corrects this.<br><br>Thanks for the great data you sent - it made duplicating the problem quite easy.<br><br>