I've been using InDesign CC and working on a document for over a month. Been saving it in Creative Cloud. Have had no problem opening it, making changes and then saving it. Today I opened, made changes and the file will not save. I've tried saving it down and opening in Indesign 6 and it still won't save. I also cleared InDesign preferences and reinstalled InDesign. Still won't save when I open it up. The strange part is I'm able to open on another computer through Creative Cloud and am able to work on it and save back to Creative Cloud. No matter what I do I can't open and then save on the original computer.