This article helps you to troubleshoot the “zip END header not found error during Snapshot deployment
Suggestions
Check if you are seeing an error if the snapshot contains attachments or without an attachment. If it happening with attachments snapshot try without attachments and let us know the results.
If the above doesn’t work: we'd suggest getting the snapshot zip directly from the file system on the source instance (found in Jirahome - export - snapshots), and try to unzip it. Then move the snapshot zip to the file system on the target instance, and try to deploy it from there by providing a path, as described here: https://appfire.atlassian.net/wiki/spaces/CMJ/pages/197923184/Choose+a+Snapshot?src=search
Also, on the source instance, try converting the snapshot from binary to XML from CMJ's 'Advanced' page, download and unzip it:
Convert Snapshot Files