Unknown target window %s
The target dialog for the Run Dialog action does not appear in the list of dialogs. This may be due to a misspelling of the target dialog's name, or because the target dialog was deleted, or because no target dialog was specified at all (name will be empty in that case).
Without a valid target dialog, the Run Dialog action will fail and will probably cause the installation to fail as well.
Make sure that the Run Dialog action specifies an existing dialog.