Sorry, I mixed up the languages ;-)
I've got a problem to create valid epub with 7-zip. When I validate the zip-file (renamed .epub) and run the validation tool at
http://www.threepress.org/document/epub-validate/ I alway get the error message: "mimetype entry missing or not the first in archive".
I've done it in the followin manner:
1 add the mimetype file uncompressed to the archive
2 add the remaining folders (META-INF, OEBPF)
What is my mistake?
@Jelby: yes, it creates .zip, not 7-zip fomat.