ORDER, TOPCOUNT, TAIL, etc breaks calculated member in SQL 2012 SP1

Hi,

I had a report in SSRS that was working just fine in SQL 2012. I upgraded to SP1 and my client informed me the report was broken.

When I looked into it I found that I was getting an error because I was sorting on a calcuated member that was returning an error.

Here is my original query:

WITH 
MEMBER [Measures].[ParameterCaption] AS 
'(' +
ANCESTOR([Calendar].[FiscalYear].CURRENTMEMBER,2).NAME +') '+ [Calendar].[FiscalYear].CURRENTMEMBER.NAME --the desired result would be something like: (2013) 01-Jan

MEMBER [Measures].[ParameterValue] AS '[Calendar].[FiscalYear].CURRENTMEMBER.UNIQUENAME' 

MEMBER [Measures].[ParameterLevel] AS '[Calendar].[FiscalYear].CURRENTMEMBER.LEVEL.ORDINAL' 

SELECT {
[Measures].[ParameterCaption], 
[Measures].[ParameterValue], 
[Measures].[ParameterLevel]
} ON COLUMNS , 

ORDER (
	filter(
		[Calendar].[FiscalYear].[Fiscal Month Name].ALLMEMBERS,
		not isempty([Measures].[Tran Count])
	)
,Measures.ParameterCaption, BDESC)

ON ROWS 
from [Sales Cube]

Again, this USED to work just fine, the only thing that has changed is applying SP1.

Now, after playing around with it a bit, I have found that if I change the ORDER function to sort by ParameterValue the query actually returns rows, however, the ParameterCaption column shows #Error. The error is 'type mismatch'.

When I remove the ORDER and FILTER functions the concatenation works just fine:

WITH 
MEMBER [Measures].[ParameterCaption] AS 
'(' +
ANCESTOR([Calendar].[FiscalYear].CURRENTMEMBER,2).NAME +') '+ [Calendar].[FiscalYear].CURRENTMEMBER.NAME
MEMBER [Measures].[ParameterValue] AS '[Calendar].[FiscalYear].CURRENTMEMBER.UNIQUENAME' 
MEMBER [Measures].[ParameterLevel] AS '[Calendar].[FiscalYear].CURRENTMEMBER.LEVEL.ORDINAL' 
SELECT {
[Measures].[ParameterCaption], 
[Measures].[ParameterValue], 
[Measures].[ParameterLevel]
} ON COLUMNS , 

[Calendar].[FiscalYear].[Fiscal Month Name].ALLMEMBERS
ON ROWS 
from [Sales Cube]

Am I the only one having this issue? I've searched the forumns and can't seem to find a resolution.

Thanks all!

JC