Cruisecontrol.net Robocopy SMB permissions issue

Question

Hello

I'm having problems with robocopying a repository from a windows server machine to a samba share.

When I run the copy logged in with my domain username on the server it works in the terminal, but when I run it through cruisecontrol it's failing, CC is reporing back Access is denied.

 <message>2010/07/08 14:54:41 ERROR 5 (0x00000005) Copying File E:\CruiseControl.NET\server\BuildData\Internal\mapp\file</message>
  <message>Access is denied.</message>

The samba log does't seem to help too much, it just shows the user connecting is nobody.

In my samba config I have

guest account = nobody

and in the directory in question

guest ok = Yes

Can anyone help to shed any further light on this please?

Cheers

Tom