Why are my custom ringtones not working on my S6 Active after updating to 5.1.1?

[AC Question]

Just like the question says, I updated my phone to 5.1.1, and my custom ringtones aren't playing whenever one of my contacts with one calls. When I check the info on my contacts, it still shows them as having a custom ringtone, but when they call my phone only plays the default ringtone. Anyone else having this problem?

 

[B. Diddy]

Welcome to Android Central! Are the custom ringtones still in the Ringtones directory? What happens if you reselect the custom ringtone for those contacts, even though it's already assigned?