Classes: adding a new variable produces errors

Hi all,
I have a class inside a program and at the moment it works fine. But when I add one more variable to it - then I run into the errors in the program - it actually runs, but all the other variables have some random number. I guess I run into some memory issues.
So here is my class:

Code:

---

class plasma_class
{
public:
        float PeakDensity;
        short DensityProfileX;
        short DensityProfileY;
        short NumberOfSpecies;
        double RoughnessAmplitude;
        double RoughnessPeriod;
        //double FrontPreplasmaLength;
        //double RearPreplasmaLength;

        struct specie_class
        {
                int ParticlesPerCellX;
                int ParticlesPerCellY;
                int Charge;
                double Mass;
                double ReciprocalMass;
                int NumberOfParticles;
                int CellsPlasmaX;
                int CellsPlasmaY;
                double StartX;
                double EndX;
                double StartY;
                double EndY;
                double PeakCharge;

        struct particle_class
                {
                //public:       
                        double x;
                        double y;
                        double p_x;
                        double p_y;
                        double p_z;
                        //double ExParticle;
                        //double EyParticle;
                        //double BzParticle;
                        double q;
                        short InsideVolumeFlag;
                };

                std::vector<particle_class> particle;

               
        };

        std::vector<specie_class> specie;

        plasma_class(const char *, simulation_class simulation);

        void move(simulation_class simulation, fields_class &fields, int TimeStep);
       

};

---

Problems start when I uncomment for example FrontPreplasmaLength. Could anybody help me understand all this stuff and resolve the problem

Thanks in advance

Did you recompile ALL the code that uses the class?

--
Mats

Cheers, Mats you saved the dummy once again :)