Hello, from Debian bug #751014 (http://bugs.debian.org/751014):
When org-mime-library is set to semi, org-mime generates a spurious alternative section around the HTML part. This is due to two bugs in the function org-mime-multipart: 1. it attempts to put a multipart/alternative section around the HTML, where it should be putting a multipart/related part; 2. it tests for the presence of images by doing "(when images ...)", which triggers when images is the empty string (somebody has been programming in Python or Javascript?). To repeat: M-x load-library "org-mime" RET M-: (setq org-mime-library 'semi) RET M-x wl RET w Then insert some text below the separator line, and do M-x org-mime-htmlize and see the breakage. Cheers, --Seb