So, after having installed Emacs 24.5 and Spacemacs on Ubuntu, and every time I start up Emacs, Spacemacs tries to download a package and fails, saying:

Error (use-package): evil-jumper :init: Symbol's function definition is void: evil-jumper-mode

I read in an issue at the Spacemacs repo and in the archived Gitter chat that it helps deleting the evil-jumper folder in ~/.emacs.d/elpa/, but it is not there, so this is not an option.

I've tried reinstalling spacemacs, updating packages and updating spacemacs - no luck, still the same error

Does anyone know what else I could do?

I got an answer on the Gitter:

TheBB 12:45 @brenogil @reefersleep evil-jumper used to be a separate package, but it was then integrated into evil proper, so we removed the usage of evil-jumper from the develop version. We left it in master, though, because it would still work fine. However it looks like the evil-jumper package has now been removed from MELPA. Which is a problem, because it breaks Spacemacs on master. Hopefully we can backport that change today. It was probably a mistake not to do it in the first place.

I believe you could add it to your excluded packages

if master hasn't been updated yet

dotspacemacs-excluded-packages in your .spacemacs file