this also seems to happen when using 0.8a on the current backer version but it seems to be whenever you load or create a save and it doesn't remove itself.
I also noticed that the tattoo salesman crashed because it is missing an image file also the file location and name is img/pictures/zzzakin_s%20tattoo%20guy.png
That image file is missing because that underscore in the file name is an apostrophe in the actual file name. It's been replaced by an underscore in the code, probably because that's required to allow the file to load. I haven't checked if there's anywhere that still references that file with an apostrophe, but I can confirm that the problem went away when I created a symbolic link to the correct image, with the apostrophe subsituted for an underscore.
