Why does the fitter fail without an error message? - Why does the fitter fail without an error message? Description Due to a problem in the Quartus Prime software Pro edition version 16.0, you may see the fitter fail without an error message if you do not have a valid quartus_pro license. This problem only occurs in the GUI, the command line executable does report that the quartus_pro license feature is unavailable. Resolution To work around this problem, ensure that you have a valid quartus_pro license feature. In a future release of the Quartus Prime software, you will get an error message in this situation. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] novalue 16.0 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']