Why does the Intel® OFS 2.1.0 compilation failure happen in the Intel® Quartus® Prime Software v21.3 GUI? - Why does the Intel® OFS 2.1.0 compilation failure happen in the Intel® Quartus® Prime Software v21.3 GUI? Description Due to a problem in the Intel® Quartus® Prime Pro Edition Software v21.3, you might see compilation failure on the Intel® Open FPGA Stack (Intel® OFS) 2.1.0 version with compilation flow in GUI. In GUI compilation, the path with global environment cannot be recognized while executing the post_module_hook.tcl file. Error: Tcl Script File $: not found Evaluation of Tcl script $: unsuccessful Resolution In script compilation, it can be recognized and executed successfully: quartus_sh -t $::env(BUILD_ROOT_REL)/syn/ofs_ac/common/setup/post_module_hook.tcl quartus_asm ofs_top ofs_top You can use script compilation or remove assignment in ofs_top.qsf as a workaround: set_global_assignment -name POST_MODULE_SCRIPT_FILE "quartus_sh:$::env(BUILD_ROOT_REL)/syn/ofs_ac/common/setup/post_module_hook.tcl" This problem is fixed beginning with the Intel® Quartus® Prime Pro Edition Software v21.4. Custom Fields values: ['novalue'] Troubleshooting 15010294987 False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 21.4 21.3 ['Agilex™ 7 FPGAs and SoCs'] ['novalue'] ['novalue'] ['novalue']