Deployments executed after creating a newly created/duplicated environment result in either:
Release : 6.6
Component : CA RELEASE AUTOMATION RELEASE OPERATIONS CENTER
After using the KB below to cleanup the cache, also taking care to remove the files/folders in NAC_INSTALL_DIR/temp/* (not the folder itself), manually creating a new environment fixed this problem.
Knowledge Base Article: CA Release Automation Clean up and Troubleshooting best practices
Do not use forward slashes "/" in Environment names.