FAQ: The error message "Build Update doesn't find any updateable application. This application will be closed now!" is displayed when attempting to downgrade a zenon editor or runtime installation.
Older build setups for versions <=8.20 may not allow a direct downgrade when the installed build number is 65535 or higher. To resolve this, uninstall zenon and apply the older build where necessary. Contact your local support in case of any further questions.