libpng12.so.0: cannot open shared object file: No such file or directory - libpng12.so.0: cannot open shared object file: No such file or directory Description You may see this error when installing the Quartus® Prime Pro Edition Software version 18.1 on Ubuntu version 18.04 LTS. This is because libpng12.so.0 has been superseded by libpng16.so.0 . Resolution To work around this problem, install the required library libpng12.so.0 by downloading the libpng12-0 package from Ubuntu's website and installing the .deb file. Related Articles The Intel® Quartus® Prime Software version 18.1 requires additional libraries to be installed for Ubuntu 18.04 LTS. Custom Fields values: ['novalue'] Troubleshooting 2205700097 False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 18.1.1 18.1 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']