I've been using PS on my iPad sine it came out, and suddenly--like the last two or three days--it refuses to access files in my Creative Cloud folder. I get the error message "Couldn't communicate with a helper application. Try your operation again. If that fails, quit and relaunch the application and try again." I have quit and relaunched Photoshop, restarted the iPad--no luck. To be honest, I don't even know what helper application it is referring to. PS/iPad accesses all my other cloud folders perfectly--Dropbox, Google Drive, etc. Only Creative Cloud has stopped working. Any suggestions?