multiple loaded .obj files crash program

I have written an obj class in C++ to parse .obj files, store the vertices, textures, and normals, and display the object using glDrawElements.
I noticed that all objects can be drawn, but not simultaneously. I can draw any object by itself but if I run the program with three or more objects, it crashes during execution. It seems like an issue with memory allocation. Is there a way to properly malloc for all objects? All code is in C++ and uses openGL.

void draw()
{
    glEnableClientState(GL_VERTEX_ARRAY);
    glVertexPointer(3, GL_FLOAT, 0, vertices);

    if (textures != NULL)
    {
        glEnableClientState(GL_TEXTURE_COORD_ARRAY);
        glTexCoordPointer(2, GL_FLOAT, 0, textures);
    }

    if (normals != NULL)
    {
        glEnableClientState(GL_NORMAL_ARRAY);
        glNormalPointer(GL_FLOAT, 0, normals);
    }

    //glEnableClientState(GL_COLOR_ARRAY);
    glColor4f(1,1,1,1);

    glDrawElements(GL_TRIANGLES, numOfFaces*3, GL_UNSIGNED_INT, indices);

    glDisableClientState(GL_VERTEX_ARRAY);          // disable vertex array
    glDisableClientState(GL_TEXTURE_COORD_ARRAY);   // disable texture array
    glDisableClientState(GL_NORMAL_ARRAY);          // disable normal array
    //glDisableClientState(GL_COLOR_ARRAY);
}

and the push and pop matrices.

    glPushMatrix();

        glPushMatrix();
        glTranslatef(2000,0,5000);
        glScalef(85.0f,85.0f,85.0f);
        //glRotatef(iconSpin, 0,1,0);
        pistol->draw();
        glPopMatrix();

        glPushMatrix();
        glScalef(85.0f, 85.0f, 85.0f);
        stormtrooper->draw();
        glPopMatrix();

        glPushMatrix();
        glTranslatef(200.0f, 0, 0);
        glScalef(85.0f,85.0f,85.0f);
        player->draw();
        glPopMatrix();


        glTranslatef(0,-1000.0f, 0);
        glScalef(40.0f, 40.0f, 40.0f);
        building->draw();

    glPopMatrix();