Unexpected end of file reading

Is it an exceptionally large file (like in the gigabyte range)?

No, it’s not large. It’s 585MB. Thanks

Sounds like there is some corruption in the DBF part of that shapefile (the DBF-part of the shapefile contains the attributes, it’s a very old file-based database format). There’s a few options you can try:

• Since you mention it displays ok in ARcGis Pro, try exporting it from there, then see if the new shapefile works.
• If you also have QGis, try opening the shapefile with QGis.
• DBF files can actually be opened separately using Excel, edited, and then saved back to DBF. That might fix things as well.
• If you do some searching, you can find several shapefile repair tools, that might help you out.

Be sure to make a backup of the original shapefile. The above might solve the corruption (if it is corruption), but in doing so might also remove vital information, so using the backup you may be able to rescue that.

Personally I never use shapefiles anymore, but Geopackages. That also removes the 8-character limit for the attribute names, and instead of a bunch of files it’s only 1. Which makes it a lot easier to share using sneakernet or email.