Why does the Quartus II software give a fatal error after adding post-fit nodes in the SignalTap II Logic Analyzer? - Why does the Quartus II software give a fatal error after adding post-fit nodes in the SignalTap II Logic Analyzer? Description Due to a problem in the Quartus ® II software version 12.1 and later, you may see a fatal error after adding post-fit nodes to the SignalTap ™ II Logic Analyser in your Stratix® V design. Resolution To work around this problem, delete the db and incremental_db directories. This problem is fixed beginning with the Quartus II software version 13.1. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['FPGA Dev Tools Quartus II Software'] 13.1 12.1 ['Stratix® V FPGAs', 'Stratix® V GX FPGA'] ['novalue'] ['novalue'] ['novalue'] - 2021-08-25