Error "InstallScript Setup Launcher Unicode has stopped working" while installing Sage 300 Product Update

Summary

Error “InstallScript Setup Launcher Unicode has stopped working” while installing a product update.

Cause

Shared data location was changed after the program was installed. 

The information in the installshield file is not accurate, and the product update installation requires information about the shared data path 

Resolution

Check if the same error occurs during a repair of Sage 300, this could indicate a problem with the installshield file.

Rename the Installshield Installation Information folder in C:\Program Files (x86).

Run the Sage 300 setup again.  This will reinstall the program, creating a new installshield entry.

Install the product update.