Hello,

Attempting to test the EC2 plugin, have configured the Cloud Settings and AWS Access Credentials etc. However, when i goto create a new node and click on the 'Provision via' button, i get the following error:

com.amazonaws.services.ec2.model.AmazonEC2Exception: Value () for parameter groupId is invalid. The value cannot be empty (Service: AmazonEC2; Status Code: 400; Error Code: InvalidParameterValue;

Haven't been able to suss out exactly which param is missing here. Any ideas?