Sitecore error - Could not get pipeline: speak.client.getStyle

After a deployment on Sitecore version 8.1 the following error was appearing when attempting to load the administration launchpad.

Could not get pipeline: speak.client.getStyle (domain: )

I did a search through a clean Sitecore instance's configuration file and found the reference speak.client.getStyle section in the App_Config/Include/001.Sitecore.Speak.Important.config file.

Loading up the show config administration page on the suspect server, there were no patches from 001.Sitecore.Speak.Important.config and browsing the App_Config folder confirmed this file was disabled. Removing the .disabled file extension solved the issue.