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glGenTextures does not work anymore

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i created a file identifier for a texture with this function:
inline bool LoadTexture (const char *filename, GLuint &textureID, int wrap = 0)
	fipImage fimage;
	if(fimage.load(filename) ) {
		float fWidth = fimage.getWidth(); float fLength = fimage.getHeight();

		glGenTextures (1, &textureID);
		std::cout<<"Textur ID: "<<textureID<<std::endl;
		glBindTexture (GL_TEXTURE_2D, textureID);
		std::cout<<"Texture binded"<<std::endl;

		if(fimage.getImageType() == FIT_BITMAP) {
// ....
but if i try to load bitmaps using in main() nothing works:

	GLuint up; LoadTexture("/home/Xerces/devel/engine_0.4/bin/sky/up.bmp", up);
	GLuint left; LoadTexture("/home/Xerces/devel/engine_0.4/bin/sky/left.bmp", left);
	GLuint mid; LoadTexture("/home/Xerces/devel/engine_0.4/bin/sky/mid.bmp", mid);
	GLuint right; LoadTexture("/home/Xerces/devel/engine_0.4/bin/sky/right.bmp", right);
	GLuint beh; LoadTexture("/home/Xerces/devel/engine_0.4/bin/sky/beh.bmp", beh);
	GLuint down; LoadTexture("/home/Xerces/devel/engine_0.4/bin/sky/down.bmp", down);
this is a part of the draw() function
	// Store the current matrix
	// Reset and transform the matrix.
	glRotatef(-m_pParentGraph->GetCamera()->m_pitch, 1.f, 0.f, 0.f);
	glRotatef(-m_pParentGraph->GetCamera()->m_head, 0.f, 1.f, 0.f);

	// Enable/Disable features

	// Common Axis Z - FRONT Side
	// Render the front quad
	glBindTexture(GL_TEXTURE_2D, m_iSkyBoxT[0]);
	glTexCoord2f(0, 0); glVertex3f(  0.5f, -0.5f, -0.5f );
	glTexCoord2f(1, 0); glVertex3f( -0.5f, -0.5f, -0.5f );
	glTexCoord2f(1, 1); glVertex3f( -0.5f,  0.5f, -0.5f );
	glTexCoord2f(0, 1); glVertex3f(  0.5f,  0.5f, -0.5f );
the most stupid thing is, that the same code works in an other program? i dont know what is wrong... if i check the value of the identifier the value is curios. for example >1000000000 or zero?!

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