Custom capability conflict with W3TC plugin
A user reported in the forums that while running W3 Total Cache with the New Relic setting enabled the Stream Records page disappears.
I've isolated the problem to these lines in the W3TC plugin.
It seems that $current_user->roles is just an empty array when Stream is enabled.
If you change the VIEW_CAP constant to manage_options everything works perfectly fine. So something about the way Stream is using a custom capability might be causing a conflict here, but I haven't been able to pinpoint exactly which plugin is to blame.