Hi thank you for the reply, sorry for the double post.

I uninstalled the python 3.5 and check the version on terminal was 2.7.9.
I still get this error message when using the decrypt_multibit_classic_keys.py on my .key backups.

Traceback (most recent call last):
  File "/Users/simonhunt/Downloads/multibit_recovery-master/decrypt_multibit_classic_keys.py", line 43, in
    import wallet_pb2
  File "/Users/simonhunt/Downloads/multibit_recovery-master/wallet_pb2.py", line 6, in
    from google.protobuf import descriptor as _descriptor
ImportError: No module named google.protobuf


When I run the decrypt_multibit_classic_walletkeys.py on the .wallet files I get this error message:

Traceback (most recent call last):
  File "/Users/simonhunt/Downloads/multibit_recovery-master/decrypt_multibit_classic_walletkeys.py", line 47, in
    import wallet_pb2, binascii, bitcoin
  File "/Users/simonhunt/Downloads/multibit_recovery-master/wallet_pb2.py", line 6, in
    from google.protobuf import descriptor as _descriptor
ImportError: No module named google.protobuf


Am I still using python wrong?