Please confirm your workflow below. If you do these things exactly there’s a better chance to narrow down the issue.
- Quit all software like DropBox, BoxNet etc if you use these.
- Quit FTP software.
- Make a new folder, not the one you’ve been using in this thread.
- Make sure the folder is on you local machine.
- Copy any images into this folder.
- Now add these images to the Blocs project using this folder.
Post your findings.