Amelia wrote:
It’s easy.
1. Make a zip or 7z archive with 2 txt files (e.g., 1.txt, 2.txt).
2. Open the archive with 7-Zip.
3. Dbl Click 1.txt in 7-Zip, it’s opened by EmEditor.
4. DON’T close 1.txt, Dbl click 2.txt in 7-Zip.
Then EmEditor said system can’t find the specified path (tempdir7zXX.tmp2.txt), 2.txt can’t be opened.

In WinRAR all OK.
I think, that this error in 7-zip.