[StarCluster] failure on making new AMI

[Cedar McKay]

This is what I’m doing:
Does anyone have any insight on why this might be failing?
Thanks in advance!

$ starcluster ebsimage i-0425e3cc ami_v45
StarCluster - (http://star.mit.edu/cluster) (v. 0.95.6)
Software Tools for Academics and Researchers (STAR)
Please submit bug reports to starcluster at mit.edu

>>> Removing private data...
>>> Cleaning up SSH host keys
>>> Cleaning up /var/log
>>> Cleaning out /root
>>> Cleaning up /tmp
>>> Creating new EBS AMI...
>>> New EBS AMI created: ami-7f51544f
>>> Fetching block device mapping for ami-7f51544f 
!!! ERROR - Error occurred while creating image
!!! ERROR - snapshot None does not exist

Thanks,
Cedar