Hi Steve,
The installation is for each machine.
We copy the installation package to the system local drive and run setup.
We also tried uninstall, reboot the system and install the package.
For CS4, we found log inside ProgramData\flexnet folder with error - EventCode: 30000011 after re-installation.
We searched and found some steps to fix this issue. Will try them and update again.
Please let us know if you have any suggestions.