Help with a runtime error on a filtering macro.

With this sites help I built a workbook that takes a long string of characters and breaks it down into subparts and then filters that throughout the workbook. I don't use the workbook, it was created to assist another and now we are receiving a runtime error. I currently don't have that workbook to provide but I was given a couple screenshots of the issue. I had them start all over in the original template and the same error occured, so I think it is something with the data file that we import in, but I am just looking for advice on where to begin to look.