I try to copy some files from my kingston usb flash disk. I have el capitan. Prior to this, a lot of ‘checkdisks’ in windows and OS X (disk utility), just to be sure it is ok. Then I try to copy. And errors like this appears: I have paragon ntfs on my mac, and I can copy other files from this usb disk, but there is a folder that denies to be copied! If I do not copy this ‘problematic’(for OS X) file, then after a while, another similar message appears. Besides that, some files are copied, but the copy procedure stops, when a message like this, appears. So, where is the problem?