Dropbox has synched all of my files onto my ****** drive and now my available disk space is critically low. I've tried moving the files to an external drive but the files all have a grey X on them and when I try to move them I get an error message:
"An unexpected error is keeping you from moving the file. If you continue to receive this error, you can use the error code to search for help with problem"
Error 0x80070780: The file cannot be accessed by the system.
Help!