I have been uploading pictures from my Samsung WB250F camera for over a month; now I get "upload failed. Upload again or connect to other networks".  I tried SkyDrive on Dell Inspiron 2020 on another Dell Inspiron 1440 computer; same results.  I used a different router, different DSL provider, Vista instead of Windows 8.1 preview; same results.  I can upload pictures using Evernote and Picasa.  Any suggestions?