Acrobat.com error

Hi. I created a form and wanted to distribute to our customers using Acrobat.com however when I click distribute, type in the email address..then click again the following error occurs:

"Acrobat failed to set up a workflow folder in the specified shared folder or host service."

Can anyone tell me what I am doing wrong. This is my first time doing this.

thanks,
sara

I'm on a Mac / Acrobat 9 Pro