Cannot Add Custom Ringtones with 12.7
After updating to the recent 12.7, I have been unable to add my custom ringtones to my iPhone. I know that the method now is to easily drag and drop your .m4r files to the Tones section in iTunes. But, when I do so, all I get is an error stating:
"YourSongHere.m4r" was not copied to the iPhone "[My] iPhone" because it cannot be played on this iPhone.
All of my other ringtones are .m4r and they work just fine. Am I doing something wrong? Please help.
iPhone 6s, iOS 11.0.1