cbrestore to copy data to a new bucket?

trying to use cbrestore to transfer/copy data to a new bucket. essentially would like to rename a bucket, by transferring from existing bucket to the new one already created.

tried:
"C:\Program Files\Couchbase\Server\bin\cbrestore" --host=localhost --port=11211 --username=newbucket --password=xxxxx --verbose master.couch 0.couch 1.couch 2.couch 3.couch 4.couch 5.couch 6.couch 7.couch 8.couch 9.couch 10.couch 11.couch 12.couch 13.couch 14.couch 15.couch

but I get this message:
Error running query: PRAGMA user_version;
Error: near line 1: file is encrypted or is not a database.

I am most certainly not understanding something correctly.

I saw the documentation of mbrestore (in the Couchbase 1.8 documentation) and figured cbrestore should be able to do the same:

http://www.couchbase.com/docs/couchbase-manual-1.8/couchbase-backup-rest...
If you are unable to meet the above requirements for restoring a cluster, you can use the mbrestore tool (included in versions 1.6.4 and higher). This script will read the documents from a set of database files and send them as client commands into a bucket of your choosing.

This is useful if:

You want to restore data into a cluster of a different size

You want to transfer/restore data into a different bucket

any suggestions?

Thanks,
ChssAddct