Hi, just had 30 min of fun with a whitespace as in (note the space at the end of koma_article) #+LaTeX_CLASS: koma_article Since I just use this option for the first time and I created my own entry for 'org-export-latex-classes (according to the tutorial) I was believing I am doing something wrong. Not sure for other parameters but I would believe that leading and ending whitespaces should be skipped. Its hard to distinguish #+LaTeX_CLASS: koma_article and #+LaTeX_CLASS: koma_article ;)
The error message on export was correct to say org-export-latex-set-initial-vars: No definition for class `koma_article ' in `org-export-latex-classes' (again notice the space) Org-mode version 7.7 (git) Emacs version 24 I know ... all bleeding edge but maybe its not a very recent problem. All the best Torsten