After updating to 24.4 I'm having problems opening files with tramp.
Here are the sequence of events to reproduce the problem.

emacs -Q

Evaluate
(setq tramp-debug-buffer t)
(setq tramp-verbose 10)

C-x C-f /remote-host:/some/path/file

In the minibuffer I see "Tramp: Checking `vc-registered' for
/scp:phe:/home/jrm/input.tre" (then an indefinitely rotating '/').

When I cancel with C-g, then try again visiting the file again
everything works.  If I try again it will fail again.

I've attached the contents of the tramp buffers.  I've reproduced the
problem on other hosts also running FreeBSD (amd64 9.3).

Joseph

In GNU Emacs 24.4.1 (i386-portbld-freebsd9.3, X toolkit)
 of 2014-10-27 on gly.ftfl.ca
Windowing system distributor `The X.Org Foundation', version 11.0.11204000
Configured using:
 `configure --localstatedir=/var --without-compress-install
 --without-dbus --with-file-notification=gfile --without-gconf
 --with-gif --with-gnutls --without-gsettings --with-jpeg
 --without-m17n-flt --with-imagemagick --with-libotf --with-png
 --without-toolkit-scroll-bars --with-rsvg --with-tiff --with-x
 --with-xft --with-xim --with-xml2 --with-xpm --with-x-toolkit=athena
 --without-xaw3d --with-sound=oss --x-libraries=/usr/local/lib
 --x-includes=/usr/local/include --prefix=/usr/local
 --mandir=/usr/local/man --infodir=/usr/local/share/emacs/info/
 --build=i386-portbld-freebsd9.3 'CFLAGS=-O2 -pipe -fno-strict-aliasing'
 CPPFLAGS=-I/usr/local/include 'LDFLAGS= -L/usr/local/lib
 -Wl,-rpath=/usr/local/lib -ltinfo''

Important settings:
  value of $LANG: en_CA.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Fundamental

Minor modes in effect:
  shell-dirtrack-mode: t
  tooltip-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
C-y M-y C-a C-k C-y C-a C-p ( C-n C-e C-b C-b C-b C-d 
C-d 6 C-e C-p C-e C-x C-e C-n C-x C-e C-x C-f C-a C-k 
/ p h e : / h o m e / j r m / i n p u t . t r e <return> 
C-x C-f <up> <return> M-x r e p o r t - e m <tab> 
<return>

Recent messages:
Tramp: Opening connection for phe using scp...done
Tramp: Inserting `/scp:phe:/home/jrm/input.tre'...
Tramp: Encoding remote file `/scp:phe:/home/jrm/input.tre' with `recode data..base64 <%s'...done
Tramp: Decoding local file `/tmp/tramp.2137x3z.tre' with `base64-decode-region'...done
Tramp: Inserting `/scp:phe:/home/jrm/input.tre'...done

Tramp: Checking `vc-registered' for /scp:phe:/home/jrm/input.tre...failed
Tramp: Inserting `/scp:phe:/home/jrm/input.tre'...done
Quit
scroll-down-command: Beginning of buffer

Load-path shadows:
None found.

Features:
(shadow sort mail-extr emacsbug message rfc822 mml easymenu mml-sec
mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils
mailheader sendmail rfc2047 rfc2045 ietf-drums mail-utils noutline
outline easy-mmode tramp-cache tramp-sh tramp tramp-compat auth-source
eieio byte-opt bytecomp byte-compile cconv eieio-core gnus-util mm-util
mail-prsvr password-cache tramp-loaddefs trampver shell pcomplete comint
ansi-color ring format-spec advice help-fns mule-util time-date tooltip
electric uniquify ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd
tool-bar dnd fontset image regexp-opt fringe tabulated-list newcomment
lisp-mode prog-mode register page menu-bar rfn-eshadow timer select
scroll-bar mouse jit-lock font-lock syntax facemenu font-core frame cham
georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao
korean japanese hebrew greek romanian slovak czech european ethiopic
indian cyrillic chinese case-table epa-hook jka-cmpr-hook help simple
abbrev minibuffer nadvice loaddefs button faces cus-face macroexp files
text-properties overlay sha1 md5 base64 format env code-pages mule
custom widget hashtable-print-readable backquote make-network-process
gfilenotify dynamic-setting font-render-setting x-toolkit x multi-tty
emacs)

Memory information:
((conses 8 97723 8928)
 (symbols 24 20385 0)
 (miscs 20 45 226)
 (strings 16 19553 3568)
 (string-bytes 1 578648)
 (vectors 8 12967)
 (vector-slots 4 441209 6360)
 (floats 8 129 203)
 (intervals 28 1612 1004)
 (buffers 512 14))