Save Offline Copy

I'm getting the below error message regarding location when trying to save a file with multiple XFGetCell formulas offline.  I've updated my preferences that an earlier question showed as a solution and refreshed the workbook (again) before attempting to save...but am unable to save the file without the formulas.  I've tried directly to my desktop, various folders, where downloads go.... I can't find an acceptable location.  Any help would be appreciated.