👏👏👏 What a helpful community. 👌 So inspiring. Much thanx 👍
I "figured out" what the problem was, I guess.... It seems Open IV, possibly due to a glitch(?) has either become overly sensitive to formatting in a way that it wasn't before, or won't accept too many changes to certain files all at once. I couldn't import a version that had worked perfectly fine a million times before. I had to add items incrementally - virtually one at a time - until I found one that wouldn't work. With that item I copy/pasted the item just above it and changed the information in the copy to that of the "broken" one, and magically it accepted it. Didn't end there however. Copy pasting the last three items together still didn't work. So I added them one at a time - no changes to formatting - and again, magically it's kosher. Kind of pathetic really.
Didn't want to screw around, checking to see if the exported carcols could be imported now, or if I'd get the same dumb error message. Best I leave well enough alone.
I can't believe nobody else had this problem. It's complete nonsense.