Error about too many days for log

I’ve had an issue for a while now but it’s not been too much of a problem as we stopped raiding. I am not able to upload a whole log file, even one for just one day, without getting the following error:

Error: This log file contains more than one day of data. You must either split it before uploading or select specific fights to upload.

The log file in question has ONLY ONE DAY of data. I’ve checked multiple times. I have to choose “Select Specific Raids To Upload” in order to make it see the file. This forces me to pick the boss and trash fights, when I just want to upload the whole thing.

I’ve tried uninstalling and reinstalling, but the client still refuses to see that it’s just one day (heck, less than 2 hours) of fights.

What can I do to get it back to the old behavior?