Problem with a model in Simulink

Hi!

I have a program in Simulink that send data to Labview, my model is very simple, it has a constant block, a SIT OUTport1 block, and SignalProbe block. My model:

When I go to 'Tools -> Real-Time Workshop -> Build Model'

I have the next error:

Error: File: C:\SimulationInterfaceToolkit\2012\UserInterface\MEX32\tlc_c\NI_SIT_IO.tlc Line: 82 Column: 58 Unable to find GlobalBlockOutput within the BlockOutputs scope Error: File: C:\SimulationInterfaceToolkit\2012\UserInterface\MEX32\tlc_c\NI_SIT_IO.tlc Line: 82 Column: 114 The argument for an [] operation must be a repeated scope symbol, a vector, or a matrix Error: File: C:\Program Files (x86)\MATLAB\R2010b\rtw\c\tlc\lib\dtypelib.tlc Line: 490 Column: 18 The left-hand side of a . operator must be a valid scope identifier Error: File: C:\Program Files (x86)\MATLAB\R2010b\rtw\c\tlc\lib\dtypelib.tlc Line: 1431 Column: 20 Arguments to ISFIELD must be records ### Real-Time Workshop build procedure for model: 'igor' aborted due to an error.

How do I can fix it?

Can somebody help me please?

Thanks for your time.

Igor Garcia.