I ran into this issue as well. It seems like there's some sort of weird bug here. To provide some more details: I plugged in the info about the key pair I was using on the Cloudera Director server, and left my region set to the default us-west-1. This failed with a pop-up error message that said "Invalid environment: Invalid key name: <keypair-name>" I swapped it to us-west-2 and it worked. To the best of my knowledge, a keypair is not associated with a particular region, so this shouldn't occur.
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