A problem with Magit

[Marcin Borkowski]

Hi all,

I tried interactive rebase in Magit today, and ran into this (in the
magit-process buffer):

,----
| Waiting for Emacs...
| *ERROR*: Canceled by user
| Could not execute editor
`----

All I did was to swap to commits, so theoretically this should run
smoothly.

The only Magit-relevant setting in my init.el is (setq
magit-revert-buffers nil).

However, there is one (potential) problem: when I start Magit, I see
this:

,----
| Error (magit): Magit requires Git >= 1.9.4, you are using 1.9.1.
`----

I'm not sure whether this is relevant, but I include it here just in
case.  (Of course, I'm going to upgrade my Ubuntu ASAP.)

Where should I look for solution?

Best,

-- 
Marcin Borkowski
http://octd.wmi.amu.edu.pl/en/Marcin_Borkowski
Faculty of Mathematics and Computer Science
Adam Mickiewicz University