Error in 'mdm/HDLImport' while executing C MEX S-function 'sGeneric', (mdlStart), at time 0.0. - Error in 'mdm/HDLImport' while executing C MEX S-function 'sGeneric', (mdlStart), at time 0.0. Description You may receive the error message below when running a Simulink® simulation which includes the NCO Megacore® block using DSP Builder in an Arria® V design: Error in 'mdm/HDLImport' while executing C MEX S-function 'sGeneric', (mdlStart), at time 0.0. Caused by: Unexpected (char*) exception from MEX file. String is:MLIB_UINTEGER::bit() called with illegal bit_position .. Resolution To workaround this issue in Quartus® II software version 13.0 SP1, please follow the steps below: 1. Close DSP Builder (if there is one running) 2. Copy the content of the appropriate attached compressed files to your DSP Builder bin64 directory (i.e. <13_0_sp1_install_dir>/quartus/dsp_builder/bin64) 3. Re-start DSP Builder For Windows 64: 13_0sp1_windows64.zip - alt_dspbuilder_mAltr_PvoIp.mexw64 - alt_dspbuilder_mAltr_Pvo.mexw64 - alt_dspbuilder_ParseVo.mexw64 - SimgenExport.dll For Linux 64: 13.0sp1_linux64.tar.gz - alt_dspbuilder_mAltr_PvoIp.mexa64 - alt_dspbuilder_mAltr_Pvo.mexa64 - alt_dspbuilder_ParseVo.mexa64 - libSimgenExport.so This issue has been fixed in Quartus II software version 13.1 and later. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['FPGA Dev Tools Quartus II Software'] 13.1 13.0.1 ['Arria® V GX FPGA'] ['DSP Builder for Pro Edition'] ['novalue'] ['novalue']