Users/Usergroups Can't View "Replies"

[CasualConvo]

I'm pretty sure this user error on my part but some of my members can't view the replies other members leave in their topics. I've looked at all the permissions and can't see anything that needed to be changed (both forum and usergroup permissions). What am I possibly doing wrong. Oh, if this helps, I can see other peoples replies and my supermoderators replies show up for others to see....

Thank you!