I used a Digital Filter Design block to build my filter in Signal Processing Blockset 6.0 (R14). When I put this block into a subsystem and started the simulation I received the following error:
Error in 'TstFlt/mysub/Digital Filter Design': Initialization commands cannot be evaluated. MATLAB error message: Error using ==> set_param Error in 'TstFlt/mysub/Digital Filter Design/Digital Filter': Initialization commands cannot be evaluated. MATLAB error message: Error using ==> dspblkfilter>genIIRArgsStruct Scale values must either be scalar or have length one more than the number of sections
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