Error: ModelSim: couldn't execute "vcom": no such file or directory - Error: ModelSim: couldn't execute "vcom": no such file or directory Description You may get this error when you try to launch the ModelSim ® simulator from the Quartus ® II software, using the NativeLink ® integration feature. The Quartus II software requires the directory containing ModelSim executables such as vlog, vcom, and vsim to be in the PATH environment variable. For example, the PATH variable must include the following directories for the ModelSim SE software and the ModelSim-Altera tool on a PC platform: <ModelSim SE Installation>\win32 <ModelSim-Altera Installation>\win32aloem Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Programmable Logic Devices'] ['Simulation Dev Tools ModelSim'] ['novalue'] ['novalue']