Fixing installation or licensing issues

Installation of a new version of Ansys Lumerical should automatically uninstall any prior versions on your computer when the option to uninstall is selected during the installation process without manually uninstalling the older version first. However, in some cases, the automatic un-install fails, resulting in one of the following errors after the installation.

• Activation failed with error code # -
• Error: There was a problem loading the activation library. Code #
• Internal error: -178

Try to resolve the above by doing a "clean installation" of Lumerical as shown below.

Requisites

• Admin or root privileges on the local computer.
• Lumerical installation package of the version to be installed.

Windows clean installation

Close the error message and any running Lumerical simulation/application. If possible reboot the computer. Do step #1 below. If this does not resolve the issue, continue with the rest of the process. Default installation process shown.

1. Delete all of the "Lumerical preference.ini" files including the "License.ini" file from your computer. Open a windows command prompt and run the following:

   cd %AppData%\Lumerical
   del *.ini  

2. Reboot the computer.
3. Uninstall all 'Lumerical or Ansys Lumerical' applications from your computer via 'Windows Control Panel > Programs and Features'.
4. Delete the installation folder. Open Windows File Explorer and go to: 'C:\Program Files\Lumerical\' and ensure the "version's directory" has been removed. e.g. "[[verpath]]" folder is the current release's directory. 
5. Reboot your computer and Install Ansys Lumerical.

Linux clean installation

Close the error message and any running Lumerical simulation/application. If possible reboot the computer. Do step #1 below. If this does not resolve the issue, continue with the rest of the process. Default installation process shown.

1. Delete all of the "Lumerical preference.ini" files from your computer.

   rm ~/.config/Lumerical/*.ini 
   or
   rm $HOME/.config/Lumerical/*.ini 

2. Remove 'Lumerical' from your machine using yum. 

   sudo yum autoremove Lumerical-[[ver]]

3. Delete the installation folder.

   sudo rm -R /opt/lumerical/[[verpath]]

4. Install Lumerical.

See also

Ansys Lumerical product preference files

Windows installation guide  

RHEL/CentOS Linux installation guide  

Ubuntu Linux installation guide  

SUSE Linux Enterprise Server installation guide