I've been copying all my notes databases from one computer to another. However on the new one, when I try to open some databases, I get the error message "Lotus Notes: This database cannot be read due to an invalid on disk structure". Other databases do open normally, although some give error messages on closing them. They all work fine on the computer I've just copied them from. I copied them via a USB memory stick.
Can you tell me what's likely to be the problem?