I’m trying to run a Modelica code in SystemModeler:

model code   //constants   constant Real pi = 2 * Modelica.Math.asin(1.0);   parameter Real mukpc = 0.2;   parameter Real muspc = 0.0;   parameter Real mukps = 0.0;   parameter Real musps = 0.0;   parameter Real mukcs = 0.2;   parameter Real muscs = 0.0;   parameter Real mp = 1.0;   parameter Real js = 2.0;   parameter Real b1 = 0.01;   parameter Real b2 = 0.01;   parameter Real b3 = 0.015;   parameter Real r1 = 0.01;   parameter Real r2 = 0.003;   parameter Real r3 = 0.003;   parameter Real Ts = 1;   parameter Real Tw = 0.9;   parameter Real absTol = 0.01;   //variables   Real X1, X2, X3, Y1, Y2, Y3, tets, V1, V2, V3, omgs, A1, A2, A3, alps, Fp1, Fp2, Fp3, Fncp1, Fncp2, Fncp3, Ffcp1, Ffcp2, Ffcp3, Tcp1, Tcp2, Tcp3, Ffsp1, Ffsp2, Ffsp3, Fnsp1, Fnsp2, Fnsp3, Tfsp1, Tfsp2, Tfsp3, Text, Tfsc, Fscx, Fscy, T1, T2, T3; initial equation   tets = pi / 3;   omgs = 0.1; equation   //inpute forces   Fp1 = if mod(time, 3 * Ts) < Tw then 1000 else 0;   Fp2 = if mod(time, 3 * Ts) < Tw + Ts and mod(time, 3 * Ts) > Ts then 1000 else 0;   Fp3 = if mod(time, 3 * Ts) < Tw + 2 * Ts and mod(time, 3 * Ts) > 2 * Ts then 1000 else 0;   Text = 0;   //derivatives   V1 = der(X1);   V2 = der(X2);   V3 = der(X3);   A1 = der(V1);   A2 = der(V2);   A3 = der(V3);   omgs = der(tets);   alps = der(omgs);   //kinematics   X1 = r1 * cos(tets) + r2;   Y1 = r1 * sin(tets);   X2 = r1 * cos(tets + 2 * pi / 3) + r2;   Y2 = r1 * sin(tets + 2 * pi / 3);   X3 = r1 * cos(tets + 4 * pi / 3) + r2;   Y3 = r1 * sin(tets + 4 * pi / 3);   //dynamic equations   //shaft   js * alps = T1 + T2 + T3 - Text - Tfsc;   Fscx = Fnsp1 + Fnsp2 + Fnsp3;   Fscy = Ffsp1 + Ffsp2 + Ffsp3;   //Fsc =sqrt(Fscx^2+Fscx^2);   T1 = Fnsp1 * Y1 - Ffsp1 * X1 - Tfsp1;   T2 = Fnsp1 * Y2 - Ffsp2 * X2 - Tfsp2;   T3 = Fnsp3 * Y3 - Ffsp3 * X3 - Tfsp3;   //p1   mp * A1 = Fp1 - Ffcp1 - Fnsp1;   Ffsp1 = Fncp1;   Tfsp1 + Fnsp1 * (b2 / 2 - Y1) = Ffsp1 * b1 - Fp1 * b2 / 2 + Tcp1;   //p2   mp * A2 = Fp2 - Ffcp2 - Fnsp2;   Ffsp2 = Fncp2;   Tfsp2 + Fnsp2 * (b2 / 2 - Y2) = Ffsp2 * b1 - Fp2 * b2 / 2 + Tcp2;   //p3   mp * A3 = Fp3 - Ffcp3 - Fnsp3;   Ffsp3 = Fncp3;   Tfsp3 + Fnsp3 * (b2 / 2 - Y3) = Ffsp3 * b1 - Fp3 * b2 / 2 + Tcp3;   //friction    Ffcp1 = -mukpc * (abs(Fncp1) + abs(Tcp1 / b3)) * sign(V1);   Ffcp2 = -mukpc * (abs(Fncp2) + abs(Tcp2 / b3)) * sign(V2);   Ffcp3 = -mukpc * (abs(Fncp3) + abs(Tcp3 / b3)) * sign(V3);   Tfsp1 = 0;   Tfsp2 = 0;   Tfsp3 = 0;   Ffsp1 = 0;   Ffsp2 = 0;   Ffsp3 = 0;    Tfsc = mukcs * sqrt(Fscx ^ 2 + Fscy ^ 2) * sign(omgs);  end code; 

But I get the error:

Error

Simulation of foo exited with an error(-1073741819), see log window for details

and then:

Error: Could not read result file “C:/Users/foo/AppData/Local/Temp/WolframSystemModeler-5.0.0/sme.5.0.0_1510933977_23281.mat”. Missing data_2 matrix, the file might be corrupt.

I would appreciate if you could help me understand what is the problem and how can I solve it?