Problem loading Appointment+ on site

I'm having problems loading Appointment+ on a clients development site.
1. I've tried to load it through the wpmudev panel and get an error message "Something went wrong with plugin activation" when it attempts to activate.
2. I've tried to upload it like any other plugin and when I attempt to activate it, I am greeted with the 'White Screen of Death'.
I'm running on WP v4.1.1
I can get it to run if I turn off all plugins, but once I begin to re-activate various plugins the white screen comes up again.