selwyn@thekraken:~/spark-0.7.0/ec2$ ./spark-ec2 -i ~/aws/mykey.pem -k mykey launch spark -a ami-5ca8a328 -z eu-west-1 -s 2
Setting up security groups...
Searching for existing cluster spark...
Launching instances...
ERROR:boto:400 Bad Request
ERROR:boto:<?xml version="1.0" encoding="UTF-8"?>
<Response><Errors><Error><Code>InvalidAMIID.NotFound</Code><Message>The image id '[ami-5ca8a328]' does not exist</Message></Error></Errors><RequestID>10161e7d-00d1-4de1-8aec-f4a1407ac89a</RequestID></Response>
Could not find AMI ami-5ca8a328