invalid command name "get_combs" - invalid command name "get_combs" Description In the Quartus® Prime Pro Edition Software version 18.0, this error message may be seen after running the write_sdc -expand command on a session that had included the derive_pll_clocks directive. The Timing Analyzer will incorrectly infer the unsupported get_combs collection. Resolution To work around this problem, substitute all get_combs for get_nodes in the resulting sdc file after executing the write_sdc -expand command. This problem is scheduled to be fixed in a future release of the Quartus® Prime Pro Edition Software. Custom Fields values: ['novalue'] Troubleshooting 2205692204 False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 21.3 18.0 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']