You can decrypt the G-code using Carbide Motion, and then save it locally to send to your machine using some other program:
http://carbide3d.com/carbidemotion/userguide/#load
The encryption is used so as to limit Carbide Create and Carbide Motion to Carbide 3D and Stepoko machines, without that use of the machines as copy-protection dongles, some more intrusive technique, which would interfere w/ prspective users trying out the software, would be necessary.