This can be resolved by replacing the martserver.war file. Please follow the next steps:
1. Download the attached MartServer.war file.
2. Rename the existing file to MartServer.war.old in
3. C:\Program Files\erwin\Mart Server r9\Tomcat64\webapps
4. Copy the downloaded file to the same folder.
5. Restart the Erwin Mart Server service.