AX 2012 R2 - SSRS - The formatter thew an exception while trying to deserialize the message

This strange error popped up with one of my users the other day while running a report that use on a regular basis:

The formatter threw an exception while trying to deserialize the message: There was an error while trying to deserialize parameter http://tempuri.org/:queryBuilderArgs. The InnerException message was 'Element 'http://tempuri.org/:queryBuilderArgs' contains data from a type that maps to the name 'http://schemas.datacontract.org/2004/07/XppClasses:SrsReportProviderQueryBuilderArgs'. The deserializer has no knowledge of any type that maps to this name. Consider using a DataContractResolver if you are using DataContractSerializer or add the type corresponding to 'SrsReportProviderQueryBuilderArgs' to the list of known types - for example, by using the KnownTypeAttribute attribute or by adding it to the list of known types passed to the serializer.'.  Please see InnerException for more details.

A quick google search revealed most people restarting the AOS / SSRS servers to get it to clear out.
Luckily I found this post here.  This solved my problem.