title: ec2-describe-instance-status Client.InvalidInstanceID.NotFound but I KNOW instance exists
body: <p>I have setup a few of the amazon AWS CLI tools (EC2, Auto Scaling, MOnitoring and ELB). The tools are setup correctly and work perfectly. My environment vars are all set, the relevant ones to this Q being:</p>
  
  <pre><code>export EC2_REGION=eu-west-1
  export EC2_URL=https://ec2.$EC2_REGION.amazonaws.com
  export AWS_ELB_URL=https://elasticloadbalancing.$EC2_REGION.amazonaws.com
  </code></pre>
  
  <p>When I run <code>ec2-describe-instance-status i-XXXXXXXX</code> for ANY of my instances, I get:</p>
  
  <pre><code>Client.InvalidInstanceID.NotFound: The instance ID 'i-XXXXXXXX' does not exist
  </code></pre>
  
  <p>I KNOW the instance ID exists, I copied it out of the AWS web console, and it is in the eu-west-1 region, and my env vars are set to this region.</p>
  
  <p>For the life of me I can't figure out why it will not find my instances. Is there anything glaringly obvious that I am doing incorrectly?</p>
  
  <p>UPDATE: recreating x509 cert/pk solved this... for some reason.</p>