“In my opinion, SanDisk should provide free exchange of any drives that are not Windows 8 compliant.”
Have you written to them to ask that?
http://kb.sandisk.com/app/answers/detail/a_id/5232/~/return-material-authorization-(rma)-process
BTW I believe SanDisk has stopped making the Windows 8 to Go USB drives. Too many people complained they didn’t work with their old USB apps that need removable drives.