I replaced RAILS_ROOT with ::Rails.root.to_s in several places. I am seeing a 'file not found' where the path contains ::Rails.root.to_s (see attached screendump fragment)
This 'file not found' provokes a segv error if it is allowed to continue executing. The segv error dump was reported to you by your bug report system. My account name should be on it, but I don't see it here in the discussions.
I will go back and change back the suspect instance of RAILS_ROOT -> ::Rails.root.to_s and see if that fixes the problem.