Membership Premium: White Screen & no errors with WP_DEBUG

I have a site that enabled Membership Premium 3.4.6.1 without adjusting any settings that caused a White Screen of Death.

The site is part of a multisite install with a mapped domain.

The user doesn't need the plugin, so I have deleted it for now, but it was enabled and not configured and caused a white screen in WP 3.8. I enabled WP_DEBUG and there were no error messages.

I don't know if this is a known issue, but at minimum, the error reporting needs to improve in this plugin.