Recovered Autosaves Won't Save

How am I supposed to use the autosave feature?  Whenever SW crashes and I open an autosaved part, drawing or assembly, it won't save.  This isn't an isolated occurance, it happens every single time.

SolidWorks crashes.  I re-open it.  I get the Document Recovery panel.  I open one or more of the files listed.  I try to save one or more of them.  First message: "Saving this autorecovered document will replace the original file."  Click OK.  Second message: "Failed to save document."

Thanks for any help anyone can offer.

Bill

SolidworksGeneral