DCP Conversion

Hi,
I'm trying out the QubeMaster Xport Plug In for Final Cut Pro in order to export a film as DCP. It seemed to work fine. Then I formatted an USB portable hard drive as recommended with Linux system (EXT2), copied the DCP file and brought it to one local cinema that works with a Doremi Server. The server didn"t recognize the DCP file. Where could be the error? I saved the DCP file into another folder on the hard disk, may be that? Or are files exported with Qube Master Xport not compatible with Doremi Servers?
Thanks for any advice. Best,

Miguel Barreda Delgado
Realizador de Cine y Video
Arequipa, Perú
miguelbarreda@gmail.com