Readiness Checks fail with "The type initializer for 'Microsoft.Exchange.Configuration.Tasks.ThrottlingModule`1' threw an exception."

There's another thread about this issue but the accepted answer actually has nothing at all to do with the original problem/question so that's a bit deceptive.

Anyway, when trying to install Exchange 2013 SP1 (on 2012 R2 Datacentre) the installation reaches the Configuring Prerequisites part of the Readiness Checks and then fails out with the message:

The type initializer for 'Microsoft.Exchange.Configuration.Tasks.ThrottlingModule`1' threw an exception.

I honestly can't find any way around this issue and the only mentions I've seen resulted in people reinstalling Windows which obviously isn't really a resolution to the problem.

Is there any known fix for this issue?