I tried to run Ligplot+ version 2.2 for the first time on ubuntu 16.04 but it always report error: error writing parameter file. Can you help?

I downloaded a components.cif file and filled the location of my .pdb files as shown in the picture below. It still showed error. The program usually opens but doesn't display the pdb files I want...

26 May 2020 8,669 2 View