Uh....Why do Alchemists suck?
From memory there was a revision due to certain parts being underwhelming, aside from this I didn't see anything terrible about the class.
Hmm, so I guess that means on the topic of errata it's damned if you do, damned if you don't - because either people complain that something is unclear and needs errata when it doesn't have any, or they take the existence of errata and misapply it as proof of bad design.I saw the errata, and thought, "Oh Lord, it WAS bad -- so bad it got errata within a month or two of publication!"

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.