These error messages are related to reading and writing COPASIs configuration file. (see )
COPASI directory is not set. Some features might not be working correctly. Please set the environment variable COPASIDIR or use the command-line options -c COPASIDIR or --copasidir COPASIDIR to point to the COPASI installation directory.
Configuration file 'FILENAME' found but is not readable.
COPASI found the configuration file but could not read it. Please check if you have sufficient permissions on the file FILENAME.