Agree with Fern, just delete that file. Several years ago, Jane tried a new method of accessing the items her buildings sold. It actually did work, but at some point she decided that this method was too different from all the other user made buildings, so she went back to the original way of programming. At that point, she did change some of the IDs with different wording and also new images. If you have the Jane.dll, you will be fine; all her buildings should work without any problems. I don't think the file would cause an issue, but haven't tested that, so best to just remove that file all together.