4/4 Triplets changed to 27/24??

I've been arranging a trombone quartet for Can't Help Falling In Love, and have been writing the piece in 4/4 instead of something like 12/8, and putting triplets in only one or two parts.
The issue is, whenever I open the piece, it shows me that the file is corrupted with an error, the error saying "File corrupted. Measure [whatever the measure is], Staff 2 Incomplete. Expected: 4/4, Found:27/24." (Like 24 isn't even an actual time signature). W/e measure it was (it always changes, I'll explain later), I find this really weird thing that had been triplets but no longer is. So I go to fix it by deleting the entire measure and rewriting it, saving it, and then closing it. But whenever I reopen the piece to work on it, I always get the same dang error, but it's always another measure, usually the one right after the one I had previous fixed. The triplets measure will be FINE, until I save my fixings, close, and reopen the file.
It hasn't gotten to the point where it's pissing me off, I just laugh my ass off whenever it happens because I don't understand why it's happening and it's such a stupid error.

*Update: I fixed the error and was able to overcome it. I still don't understand how that happened though.