I generated a cert (manual, cert-only) for my personal sited hosted with Dreamhost. Generation was successful, however, when I tried to install it I got an error that said my private key was invalid. Just for the record, I also had to change the BEGIN and END lines, since DH's setup looks for the phrase "-----BEGIN RSA PRIVATE KEY-----" and "-----END RSA PRIVATE KEY-----" and won't accept a key that doesn't have those phrases.
Anyone got LE to work on DreamHost? If so, how?