Typos in Bourbaki's root-system tables A while ago, a colleague told me that he thought he remembered that there were typos in Bourbaki's tables in the English translation of "Groupes et algèbres de Lie", but that he could no longer find his notes indicating the specific typos.  Since I rely heavily on Bourbaki's tables when doing case-by-case classifications, I get very nervous at the thought that I might be using wrong tables.
Are you aware of any such typos, especially in Plates I–IX at the end of the book, in either the English or the French version?
 A: There is a typo that I found last year: on page 216 "Système de type $E_{7}$", the second fundamental weight $\varpi_{2}$ should be
$$\frac{1}{2}(4\alpha_{1}+7\alpha_{2}+8\alpha_{3}+12\alpha_{4}+9\alpha_{5}+6\alpha_{6}+3\alpha_{7})$$ instead of $\cdots +8\alpha_{6}+\cdots$.
A: Not speaking to the English edition, but:
I have (an electronic version of) the 1981 Masson edition (in French) of books IV-VI of the LIE volume, and that one contains a list of typos at the end. You seem to be interested in the root system tables which, I guess, would be the "Planches" on p. 250-275 in that edition; it's sometimes a good idea to cross-check those with sections 5-14 of book VI par. 4 no. 4 where those results are derived, which in that edition are on page 202-222. In that case, the last page of typos is all you need:

Basically the only important one is the one on p. 256, which gives an incorrect description of some positive roots, in terms of the common basis, in type $D_\ell$.
(The next typo, for page 257, is extremely pedantic: For all I know, the equality signs $=$ there should just be isomorphism $\simeq$ signs ...)
If anyone knows of more typos in that edition, not caught in the list above, I'd be happy to know.
Of course, other editions, in particular English ones, might have more typos. I do remember coming across some instances in the exercises about buildings (that is, to book IV paragraphs 1 and 2), where the English translation I had introduced errors absent from the original, and used differing translations for the same original French terminology. But I have lost my notes for those.
