Hi, Aussiebear: the difference is my current document is quite big (74 pages long, contains text and table insertions and only 1 image insertion: the part I'm working on only contains text and a lot table insertions) and the other document is 27 pages (only text insertions). It also contains cross-references throughout the entire document. I don't know if cross-references can be a problem with macros (?). Also, I'm using Word 2016, Windows 10, if that helps.
I appreciate the help!