I assume (as you named your profiles differently from what you downloaded here, or u used one of your own) you were running one of the TLPD profiles (and changed later to the Frostbitten Achievement profile when I look trough your logs).
When running the TLPD one, there's a few hotspots which brings you nearly out of Storm Peaks close to the Alliance Vanguard.
This is enough to get close to Putridus if he's in the same corner as you are (which walks in Icecrown in a horseshoe shape patrol).
However there is no pathing available from your location to that rare because you are flying at that point, and from midair it has a hard time to path.
You have the following options:
- fly down, kill Putridus and go back to your rounds (and hope he doesn't spawn any time soon).
- look trough the hotspots and delete the one(s) that brings you to that corner above Alliance Vanguard.
- add him to the blacklisted mobs (HB map > Plugins > Rarekiller > config > BlacklistedMobs.xml ( <Mob Entry="32487" Name="Putridus the Ancient" /> ) This does mean however that he will be blacklisted forever until you take him off that list!
All in all it's a very unfortunate event, since Putridus's patrol is quite large, and the odds that you are at that exact corner and he in range are to be frankly quite big.
However Rare Killer should blacklist the mob if it can't reach it after xx time. How much this is, I can't tell you exactly (don't feel like digging trough it to find out) so that might be a bug for Katlerze to figure out.
Either way you now have 3 options to get rid of the issue.