ODE Solver providing result in MATLAB but not in LabVIEW

Hello everyone,
I'm trying to simulate a system of non-linear ODEs in LabVIEW. I have tested the code in MATLAB and got a very fast result (within seconds), and I am trying to simulate the same thing in LabVIEW but having some major issues. Certain things I noticed right away is that when the time step goes below 1 E -9, the variable step size solvers never converge (ie never stops executing). If I bring it down, then I get error 2324.
I'm pretty confident that the code in MATLAB and the code in LabVIEW are identical with regards to the state equations. Does anyone have any idea or faced this before? In MATLAB I am using the following command:
options=odeset('RelTol',1e-6,'Stats','on');
[Tt,y] = ode15s(@Diff_Eq5_core,[0 5],zeros(1,16),options);
It also works with the solver ODE23, which is what I tried to use with LabVIEW. I am attaching my LabVIEW code (very sorry for the messy wiring, I usually write code better then this but I was in a major hurry).
Attachments:
Farag 2 Bus - LabVIEW.zip ‏56 KB

Hey guys,
So I redid the entire thing with the suggestions above - cleaning up and enforcing data flow, rechecking the equations, and I'm still not able to get ODE solvers to converge or give the proper result. I tried to implement a much simpler system of ODE (an example off the MathWorks website) and I was able to get identical results from MATLAB and LabVIEW for that attempt...so something tells me either the implementation of this system in LabVIEW for some of the equations is incorrect, OR the solvers/solver parameters are different from MATLAB and LabVIEW when it comes to stiff ODEs.
I'm able to solve this ODE system in MATLAB using ode15s (which uses BDF) and ode23s (which uses Rosenbrock). I'm using absolute and relative tolerances of 0.01 in MATLAB, (even somtimes up to 1e-6).
I'm attaching both versions of code (MATLAB and LabVIEW) for comparison. Also for in each case for the Differential Equation case structure I have put the equation that is supposed to be use to make it easier for double checking. If anyone could please take a look that would be great.
My next plan of action is to use the MathScriptRT Nodes to see if I can get it going with those.
Attachments:
ODE.zip ‏76 KB

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