Santiago Mejia writes: > Hi All, > > I just did a clean install of Xubuntu 20.04. I also installed emacs27 > (from this repository:ppa:kelleyk/emacs) > > When I try to export any snippet from org-mode by calling > org-export-dispatch, my freshly installed emacs complains: > > "let: Symbol’s value as variable is void: org-table-header-line-p"
Nothing looks off in Org's sources: org-table.el defines org-table-header-line-p, and that is used in one spot in org.el, which loads org-table.el. org-table-header-line-p was added recently (v9.4). So, it looks like in your setup there's a mismatch with a newer org.el loading an older org-table.el. https://orgmode.org/worg/org-faq.html#mixed-install
