I had a technology related one again. I dreamed I ran into a weird #Emacs glitch and looked into anyone else running into it. Instead I found a lengthy thread on emacs-devel where every post came up with an increasingly elaborate explanation invalidating the previous one. Horrified I went back to incorporating the glitch into my workflow, hoping it wouldn't be gone by the next release.
@wasamasa Oh boy, I've had so many nightmares like that. It's interesting to keep track of which technologies keep coming back in these nightmares.
I've had a disproportionally large amount of nightmares involving Haskell, for example. I can't explain why.