Errors in output when running `sops example.yaml` about sops HOT 2 CLOSED

pmoore@Petes-iMac:~/git/sops master $ export SOPS_PGP_FP=85EE8DBDAFB5CBAD273A33518295FE77B475FEBC
pmoore@Petes-iMac:~/git/sops master $ sops test-file.yaml
Traceback (most recent call last):
  File "/Users/pmoore/venvs/sops/bin/sops", line 11, in <module>
    sys.exit(main())
  File "/Users/pmoore/venvs/sops/lib/python2.7/site-packages/sops/__init__.py", line 193, in main
    if len(args.add_kms) > 0 or len(args.add_pgp) > 0 \
TypeError: object of type 'NoneType' has no len()
pmoore@Petes-iMac:~/git/sops master $