Everyone in our office is able to use data link to attach our BoM and other tables created in Excel except one person. He is able to use drawings with data links already in them, but is unable to attach them himself. I have done a cursory review of his settings and they seem to be fine to me. I'm not sure what I'm missing, but I'm guessing it is either some setting is off, or he needs his CAD reinstalled. Anyone else run into this before? (We typically use xlsm files, since that's what the DOT provides to us, but I've tested his machine with xls files and had the same result.)

Typically what happens is that whenever he selects the Excel file it reopens the file as a read only on his machine and he is unable to continue until he closes it. Once he adds the link, or tries to update an already inserted link, CAD throws a fatal error his way and that's all she wrote.