I tried to compress a folder containing some pictures, but I get this error message: "The content list cannot be created for compressing." I have Unarchiver (downloaded from App Store). The exact same folder was compressed successfully on my MBP with 10.6.8. What could be wrong? Furthermore, I tried to create a folder on Google Drive (on Safari), but an error occurred. It would not let me create a folder at al... Could these issues be related? Thanks in advance.