Activating tabbar after installation via elpa on emacs 24.2.1

[Rainer M Krug]

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Hi

I just decided to install some standard packages via elpa, and I am running 
into problems with two
packages: tabbar and color-theme

I would like to acivate them in .emacs.d/emacs.el and start the tabbar-mode and 
set color-theme-hober

I tried
  (eval-after-load "tabbar"
      '(tabbar-mode)
    )

but this activates the tabbar mode, but does not show them. I have to disable 
it and enable it
again and then can I see the tabbar.

(tabbar-mode)

tells me

Debugger entered--Lisp error: (void-function tabbar-mode)

I get a similar error for

(eval-after-load "color-theme"
  'progn(
         (color-theme-initialize)
         (color-theme-hober)
         )
  )


Debugger entered--Lisp error: (invalid-function (color-theme-initialize))
  ((color-theme-initialize) (color-theme-hober))

even though I can execute ALT-x color-theme-initialize

I guess I am missing something basic...

Any ideas?

Thanks,

Rainer
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