0x11b87: err_terminator() 0x5a (ccl_err) next at quartus/ccl/err/err_unix.cpp:153 - 0x11b87: err_terminator() 0x5a (ccl_err) next at quartus/ccl/err/err_unix.cpp:153 Description Due to data corruption in the Intel® Quartus® Prime profile folder ($HOME/altera.quartus) in the Intel® Quartus® Prime Pro Edition software version 19.3 or below for Linux, you may see a 'Fatal Error: Unhandled exception' message followed by the next error lines: 0x11b87: err_terminator() 0x5a (ccl_err) next at quartus/ccl/err/err_unix.cpp:153 0x38456: __cxxabiv1::__terminate(void (*)()) 0x6 (jtag_client) next at depot/devenv/tools/gcc/7.2.0/work/src/libstdc -v3/libsupc /eh_terminate.cc:51 0x384a1: (jtag_client) 0x385d3: (jtag_client) 0x8857f: qTerminate() (Qt5Core) next at depot/devenv/tools/qt/5.12.3/work.64/rel/qtbase/src/corelib/global/qglobal.cpp:3191 This error prevents the Intel® Quartus® Prime graphic user interface to open. Resolution To work around this problem, execute the following command: quartus --reset Your Intel® Quartus® Prime profile folder ($HOME/altera.quartus) will be restored to its default values. Custom Fields values: ['novalue'] Troubleshooting 14010580657, 1507656725, 1507311338 False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] novalue 19.3 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']