Hi, I want to latex export my paper which has to use the document class IEEEtran With the following in the preamble #+LATEX_CLASS: IEEEtran I am getting following error org-export-latex-set-initial-vars: No definition for class `IEEEtran' in `org-export-latex-classes' Can anybody guide me please ? Thanks ----------------------------- *Sanjib Sikder *Ph.D. Fellow Chemical Engineering IIT Bombay* *