ItemInfoServer.shn Error

Just having an error occur upon saving and need a little clarification about what it could be if anyone has had the error occur, it's the first time I've had it happen.

My assumption is that one of the columns is formatted in the wrong type, but just want to make sure before i remake any columns for the whole file x.x lol

Seeing as this has been a week long project adding new items and such, any help would be appreciated :) thanks in advance ^-^

Attached is a screenie with the error listed

Check DropGroupA / DropGroupB. You can't leave the value blank. Change the blank value to "-" without the quotation marks.

Yeah, i had those filled in, but i figured out the issue ^^. I had created a column within the wrong Unit/SHN/Len type lol, just wasn't a suspected error, so no big deal :) i just recreated the file with appropriate column types and initiated the ol' reliable copy pasts ^^ Thanks for the response :)