[eigen] Function 'assert' unknown

[Matthias Pospiech <matthias.pospiech@xxxxxx>]

With latest eigen2 code (zip file since svn did not work)

I always get the following error:
\include\eigen\eigen\src/Core/MathFunctions.h(47) : error C3861: 
"assert": Bezeichner wurde nicht gefunden.

The Code used is simple:
#ifndef ABCD_H_
#define ABCD_H_

#include <Qt/qobject.h>
#include <Eigen/Core>

class ABCD : public QObject
{
   Q_OBJECT
public:
   ABCD(QObject* parent = 0){};
   virtual ~ABCD(){};

};
#endif


Compiler is VS 2005 SP1, Project is using Qt, but this does not matter 
for the error.

What is necessary to get it working?

Matthias