[Bug-AUCTeX] recursive require

[Salome \=\?iso-8859-1\?Q\?S\=F6dergran]

Just updated AUCTeX with ELPA to version 11.87.5. The Compile-Log produces a 
long list of warnings and errors. The error messages appear for around 15 
el-files and look like this:
context-en.el:32:1:Error: Recursive load: 
"/home/salome/.emacs.d/elpa/auctex-11.87.5/tex.el", 
"/home/salome/.emacs.d/elpa/auctex-11.87.5/tex-site.el", 
"/home/salome/.emacs.d/elpa/auctex-11.87.5/tex.el", 
"/home/salome/.emacs.d/elpa/auctex-11.87.5/tex-site.el", 
"/home/salome/.emacs.d/elpa/auctex-11.87.5/tex.el", 
"/home/salome/.emacs.d/elpa/auctex-11.87.5/tex-site.el", 
"/home/salome/.emacs.d/elpa/auctex-11.87.5/tex.el", 
"/home/salome/.emacs.d/elpa/auctex-11.87.5/tex-site.el", 
"/home/salome/.emacs.d/elpa/auctex-11.87.5/tex.el", 
"/home/salome/.emacs.d/elpa/auctex-11.87.5/tex-buf.el", 
"/home/salome/.emacs.d/elpa/auctex-11.87.5/context.el"

The compilation process was not interrupted but continued and everything seemd 
fine.

When I now open emacs, there is the following error message in the *Messages* 
buffer:
  Error: (error "Recursive `require' for feature `tex-site'")
Emacs starts up smoothly, though, and again everything seems fine.

But when I open a tex-file  the Local Variable TeX-engine is not recognized and 
the AUCTeX functions are nowhere.

Before the update everything was ok. Is there a bug in 11.87.5 or do I have to 
change some settings? (which??)

Any help is highly appreciated!
Salome