A severe error occurred on the current command. The results, if any, should be discarded.

Hi

I will make this short. i'm running the following query:

SELECT productindex, ROW_NUMBER() OVER (ORDER BY productIndex) AS Row1 FROM products where (categoryIndex = 52 or categoryIndex = 53 or categoryIndex = 54 or categoryIndex = 55 or categoryIndex = 56 or categoryIndex = 57 or categoryIndex = 58 or categoryIndex = 59 or categoryIndex = 60)

and getting this error :

Msg 0, Level 11, State 0, Line 0
A severe error occurred on the current command.  The results, if any, should be discarded.
Msg 0, Level 20, State 0, Line 0
A severe error occurred on the current command.  The results, if any, should be discarded.

i'm running sql 2012 express latest version - higher then CUM3

server is core i7 with 8GB of RAM - currently very low on utilization - no performance issue

please advise 

thanks

guy