Tms320f28335 Simülink build error

I am using Tms320f28335 with simülink. I have a build problem. When I have builded block,

"Error: File: C:\MATLAB\SupportPackages\R2015a\texasinstrumentsc2000\toolbox\target\supportpackages\tic2000\blocks\mex\tlc_c\c280xgpio_do.tlc Line: 23 Column: 29 Values of NULL type cannot be expanded"

how can I fix?

[Daniel]

Have you resolved this problem ? I have the same error and I don't know to fix it .

[Venkatachala Sarma]

Were you able to narrow the issue? Could you share some details about your model?