Dashboard and Front End Both Empty White Pages

Uploading and installing the Blackfyre theme causes my WordPress installation to crash, displaying nothing but a blank white screen on both the front and back ends.

No errors are displayed when debug is turned on and no information is displayed when I click View Source on these pages.

Crashing still occurs even when: the theme is uploaded in Binary, every plugin is disabled and removed from the server, and when every theme other than Blackfyre is uninstalled and removed from the server.

I have also tried renaming the theme directory, deleting and re-uploading, etc.

My WordPress installation is currently at the latest version and I have upgraded to more than sufficient storage space on my hosting plan.

I need this site up and running as it receives frequent visitors daily so I have reverted it to using its old theme.

What else can I do to get Blackfyre to work?