Bad URI

[PrintsCharming]

When I run heroku:cloud_backup I get:

[2012-06-20 18:47:51 +0000] creating /DATABASE_URL/2012-06-19-200000.dump
rake aborted!
bad URI(is not URI?): https://s3.amazonaws.com/hkpgbackups/app3290753@heroku.com/a012.dump.aa?AWSAccessKeyId=MYACCESSKEY&Expires=1340218670&Signature=4OLHtEwERoKS56ZUfNdv52sYAlI%3D
https://s3.amazonaws.com/hkpgbackups/app3290753@heroku.com/a012.dump.ab?AWSAccessKeyId=MYACCESSKEY&Expires=1340218670&Signature=jf4AyYVVuO1GeXMsYiF5Y%2BiVvuw%3D

It's a large DB...and it gets split I believe(?)...could that be the issue?