Hi! I'm sorry for spamming your logfile -- ironically, I just today wrote about how to avoid logspam, but it seems I was to lazy to heed my own advice. :-)
Would you mind fixing this yourself for now? I've just checked the file, the lines you've found should be the only ones where "log()" must be removed. Just comment lines 752-756 and 764 to get rid of the spam, please!
I'll probably update this week anyway, so these lines will be removed in the next version. But I'm cooperating on this with the author of Vehicle Wagons (adding compatibility of our mods, which requires mod interaction on both ends), and there's already too much code in the new version that would make things break right now. So I'd prefer not to get sidetracked by another release to fix just this minor (although annoying) bug. :-)