We are sorry, but you have located the wrong Salient. We are Salient Software Solutions, not Salient Software. DiskDoubler is not our product. I think you may be referring to the product once owned by Salient Software (not us) known simply as DiskDoubler. The product was acquired by Fifth Generation who released version 4.0 and combined AutoDoubler, CopyDoubler, and DiskDoubler into one complete package called SuperDoubler. More recently, Fifth Generation was acquired by Symantec who renamed it Norton DiskDoubler Pro. We suggest that you try to contact Symantec (http://www.norton.com) about problems or questions on DiskDoubler.