Something is preventing it from completing. I have an idea, is it possible you could download Spore with Creepy & Cute on another device and then transfer the contents within BP1Data over to C:\Program Files\EA Games\Spore\BP1Data
If you don't, try uninstall Spore entirely again. Close the EA App and then try running the EA App as Administrator (Right click 'EA' on your desktop and 'Run as Administrator') then try downloading it again.
Also if you haven't already, uninstall the Origin version. Before that however, see if the booster pack is located at C:\Program Files (x86)\Origin Games\Spore and try to copy that file over to C:\Program Files\EA Games\Spore\BP1Data
