Internal Error: Sub-system: CPFQ, File: /quartus/pgm/cpfq/cpfq_frame_wnd.cpp, Line: 5992 - Internal Error: Sub-system: CPFQ, File: /quartus/pgm/cpfq/cpfq_frame_wnd.cpp, Line: 5992 Description Due to a problem in the Quartus® II software versions 13.0 or earlier, you may see this error if you try to open a corrupt or invalid Conversion Setup File ( .cof ), in the Convert Programming Files window. Resolution To work around this problem, generate a new .cof in the Convert Programming Files window. This problem is scheduled to be fixed in a future release of the Quartus II software. In a future release, the software is scheduled to generate a message indicating the .cof is invalid instead of generating an internal error. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']