Report Explorer; Other Reports, Audit Log List and Service Log List reports are not working correctly

The Audit Log List and Service Log List reports display an error "Failed to calculate value for Parameter 'CreatedDate' from its Default Value Expression." when the Report Parameters form is first displayed.

This is due to an issue with the way the Date Range is defaulted based on an Enum and the only impact of this error is that the 'Created Date From' date will not default to a value.

This has been corrected so that the 'Created Date From' date defaults to one month ago.