Hola buen día ! Consulto si alguien tiene el mismo problema.  Tengo instalado Odoo V8 con la localización ADHOC en un servidor CentOS. Al intentar imprimir por ejemplo una factura o bien un print screen el sistema me informa que:

Factura:

Aeroo Reports: Error while generating the report.
"background_image" not defined
"background_image" not defined
For more reference inspect error logs.

<type 'exceptions.Exception'>,Aeroo Reports: Error while generating the report.
"background_image" not defined
"background_image" not defined
For more reference inspect error logs.,<traceback object at 0x7f2863bfc320>

Print Screen:

Aeroo Reports: Error while generating the report.
"screen_fields" not defined
"screen_fields" not defined
For more reference inspect error logs.

<type 'exceptions.Exception'>,Aeroo Reports: Error while generating the report.
"screen_fields" not defined
"screen_fields" not defined
For more reference inspect error logs.,<traceback object at 0x7f74f445c368>

Luciano