Create Access Token yields 1002 error

Not sure if this goes in the developer forum or the support forum as I am a developer in need of support.  I'm using the Java API (atmos-java version 2.1.3) I can create, edit and delete files and directories with spaces in them, but I can't create an access token.  I'm using the namespace interface.

I get Atmos error code 1002: One or more arguments in the request were invalid.

This comes back from an http 400 from Atmos.

For example I have two files uploaded:

/foo/bang/test_upload.txt

/foo/bang/test upload.txt

I uploaded both files via the Java API, I can also view them in the Atmos Chrome extension.  When I call createAccessToken on each of them ( using the same Policy and no ACL) I get the 1002 error on the one with the space in the name.  Is there a problem in the atmos-java project or with Atmos itself?