Internal Error: Sub-system: PTI, File: /quartus/tsm/pti/pti_tdb_builder_nadder_hssi.cpp, Line: 158 - Internal Error: Sub-system: PTI, File: /quartus/tsm/pti/pti_tdb_builder_nadder_hssi.cpp, Line: 158 Description Due to a problem in the Intel® Quartus® Prime Pro Edition software version 20.3 and earlier, you may see this error during compilation. Resolution This problem is fixed beginning with the Intel® Quartus® Prime Pro Edition software version 20.4. Custom Fields values: ['novalue'] Troubleshooting 18015615195 False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 20.4 20.3 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']