SOPC Components not found in Quartus 7.2

My component parameters already have default values assigned I'm afraid. For example :

entity StreamCapture is
generic (
	master_address_width	: integer := 32;
	master_data_width		: integer := 64;
	stream_data_width		: integer := 32;
	stream_length_width		: integer := 24
);
port (
...etc.

If I edit the component again I get what seems to be incorrect tcl for the simulation files property with a dangling " :-

set_module_property "simulationFiles" "
  "StreamCapture.vhd"

which accounts for the error on loading the SOPC system :

Error: StreamCapture_0: extra characters after close-quote

where originally this was :

set_module_property simulationFiles {
  "PP_StreamCapture.vhd"}

reverting this removes the Error: StreamCapture_0: extra characters after close-quote

Unfortunately I haven't found a combination that allows me to have generics as parameters. I tried removing the _ and capitalising the names with no success.