Things to try:
(1) Shut down your computer before you try again.
(2) Restore preferences on your copy of InDesign
(3) From the Creative Cloud Desktop menu choose Quit. Relaunch Creative Cloud Desktop before you attempt the next download.
Something simular happened to me yesterday. I was told to trash my indesign prefs.
Close down Indesign. and when you start up, quickly hold down Shift, Control, Option and Shift keys. Indesign will ask you if you want to replace your prefs.
Unfortunately, if you trash your prefs, you will not be able to get back previous settings that you keyed in before unless you key everything back in again.
Thank you Steve! And Northbrook Graphic Guy. I ended up closing everything, reinstalling Creative Cloud updates and all went well. Thanks again. on and up, Nikki