kpfonts: NFSS system isn't set up properly

[Donalduck]

So, da wollte ich heute mal die kpfonts testen, aber irgendwie wollen die bei mir nicht.
Ich binde sie mit

\usepackage[oldstylenums,oldstylemath]{kpfonts}

ein, bekomme allerdings 2 Fehlermeldungen, die ich mit anderen Schrftarten nicht bekomme:

("E:\MiKTeX 2.7\tex\latex\oberdiek\hypcap.sty"
Package: hypcap 2008/04/14 v1.8 Adjusting anchors of captions (HO)
)) (praesentation.aux)
LaTeX Font Info:    Checking defaults for OML/jkpos/m/it on input line 4.
LaTeX Font Info:    Try loading font information for OML+jkpos on input line 4.


No file OMLjkpos.fd.

! LaTeX Error: This NFSS system isn't set up properly.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H   for immediate help.
 ...                                              
                                                  
l.4 \begin{document}
                    
For encoding scheme OML the defaults jkpos/m/it do not form a valid font shape

("E:\MiKTeX 2.7\tex\latex\kpfonts\ot1jkpos.fd"
File: ot1jkpos.fd 2007/08/30 Fontinst v1.928 font definitions for OT1/jkpos.
)

LaTeX Font Warning: Font shape `OML/jkpos/m/it' undefined
(Font)              using `OML/jkpos/m/it' instead on input line 5.

! Corrupted NFSS tables.
wrong@fontshape ...message {Corrupted NFSS tables}
                                                  error@fontshape else let f...
l.5 ...3.1}Ladida}{5}{subsection.3.1}

Das schienen mir die relevanten Ausschnitte zu sein
Falls ihr ein Minimalbeispiel für sinnvoll haltet:

\documentclass[12pt,a4paper,ngerman]{scrbook}
\usepackage[latin1]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{babel}
\usepackage[oldstylenums,oldstylemath]{kpfonts}
\usepackage{blindtext}
\begin{document}
\blinddocument
\end{document}

Dort kommt allerdings nur noch der properly-, nicht mehr der corrupted-Fehler.

 *File List*
 scrbook.cls    2007/12/24 v2.98 KOMA-Script document class (book)
scrkbase.sty    2007/12/24 v2.98 KOMA-Script package (basics and keyval use)
  keyval.sty    1999/03/16 v1.13 key=value parser (DPC)
scrlfile.sty    2007/12/18 v2.98 KOMA-Script package (loading files)
    bk12.clo    2005/09/16 v1.4f Standard LaTeX file (size option)
typearea.sty    2007/12/24 v2.98 KOMA-Script package (type area)
inputenc.sty    2006/05/05 v1.1b Input encoding file
  latin1.def    2006/05/05 v1.1b Input encoding file
 fontenc.sty
   t1enc.def    2005/09/27 v1.99g Standard LaTeX file
   babel.sty    2008/03/16 v3.8j The Babel package
 bblopts.cfg    2006/07/31 v1.0 MiKTeX 'babel' configuration
ngermanb.ldf    2008/03/17 v2.6m new German support from the babel system
 kpfonts.sty     2008/05/22 v2.2
textcomp.sty    2005/09/27 v1.99g Standard LaTeX package
  ts1enc.def    2001/06/05 v3.0e (jk/car/fm) Standard LaTeX file
 amsmath.sty    2000/07/18 v2.13 AMS math features
 amstext.sty    2000/06/29 v2.01
  amsgen.sty    1999/11/30 v2.0
  amsbsy.sty    1999/11/29 v1.2d
  amsopn.sty    1999/12/14 v2.01 operator names
blindtext.sty    2006/11/21 V1.7 blindtext-Package
  xspace.sty    2006/05/08 v1.12 Space after command names (DPC,MH)
  omsjkp.fd    2006/08/15 v1.0
  omxjkp.fd    2006/08/15 v1.0
 ujkpexa.fd    2006/08/15 v1.0
  ts1cmr.fd    1999/05/25 v2.5h Standard LaTeX font definitions
 t1jkpos.fd    2007/08/30 Fontinst v1.928 font definitions for T1/jkpos.
t1jkpssos.fd    2007/12/28 Fontinst v1.928 font definitions for T1/jkpssos.
ts1jkpos.fd    2007/08/30 Fontinst v1.928 font definitions for TS1/jkpos.
 ***********

kpfonts sind: 2008/05/22 v2.2

Ich fände es toll, wenn mir jemand helfen könnte!
Mit freundlichen Grüßen, Donalduck

EDIT: Fast vergessen: Miktex 2.7, Windows XP
Das Paket zu de- und neuinstallieren hab ich auch schon versucht.