Initiating a shared review with a Macbook Pro

I am runnning Acrobat 11.0.11 on a Macbook Pro running OS X. My workgroup for years has been placing PDFs on an internal server and "Send(ing) for Shared Review". But with my relatively new MBP, when I initiate a review and point to the "shared network folder" where the PDF is filed, Acrobat claims "Unable to create shared folder". I have write access to the folder where the PDF is stored since I just put it there. My colleagues running windows machines have no trouble with this.

Suggestions?

Greg