[O] org-bibtex-read error calling bibtex-parse-entry

Hi, I cannot get org-bibtex to work for me. Tried in a clean emacs -Q. Emacs- Version: 24.4.50, org-vesion: 8.2.6 Calling org-bibtex-read leads, independent of the bibtex entry used on (I tried everything, including the example of the org-bibtex-documentation), to the following error:

[O] no src-fontify-natively on emacs 24.4.50.1

Hi, org-src-fontify-natively is not working for me. My emacs-version: 24.4.50.1 (on ubuntu). My org-version 8.4beta (tried with git and org-track, verified by M-x org-version). Starting with emacs -Q. Now, whether I load the current git-version or not, after turning on org-src-fontify-natively,