I don't know if this has already been asked (I didn't see it in the previous thread, so please don't hate me if I missed it!), but for some reason I'm having an issue with the Cherry Juice manga. It lets me download the zip files and unzip them for 1-3, but once it gets to 4, when I try and unzip the completed download, it gives me this error message:

Unable to unarchive "cherry_juice_004.zip" into "Downloads." (Error 1- Operation not permitted.)

Is this something random with my computer, or are the files corrupted? This is a problem with all of them except 1-3 and 18.