Everything was copying fine until I reopened LR this afternoon and this message appeared. I am now stuck.....I've checked the permissions which are all OK as I'm the only person who uses this computer, but it still won't let me import any photos.
Please quote the complete exact unedited error message.
Also, please state exactly what you are doing in Lightroom. Were you trying to copy photos during Import? Yes or no? If no, then provide lots of details.
My problems have been solved, thanks. My computer had been hacked and my files were unreadable! Adobe Support resolved my Photoshop problems and restored everything, so I now have no difficulties at all.