// Header file for origin

// Load the external DLL
#pragma dll(C:\Dokumente und Einstellungen\skl.IPP\Eigene Dateien\Visual Studio Projects\Diffusion\OriginStub\Release\Diffusion.dll)
#pragma dll(C:\Dokumente und Einstellungen\skl.IPP\Eigene Dateien\Visual Studio Projects\Diffusion\OriginStub\Release\OriginStub.dll)

// Interface for origin

	// Set the current diffuion profile
int SetDiffusionProfile(double* pX, double* pC, int NumLayers);

	// Returns the number of layers in the current diffusion profile
int GetNumLayers(void);

	// Gets the C(X) diffusion profile data
int GetDiffusionProfile(double* pX, double* pC, int* pNumLayers, int MaxLayers);

	// Set the current D(C)
int SetDofC(double* pC, double* pD, int NumEntry);

	// Get the number of entries in the current D(C)
int GetNumDofCEntries(void);

	// Get D(C)
int GetDofC(double* pC, double* pD, int* pNumEntry, int MaxEntries);

	// Runs the diffusion code

		// Constant D
int DiffusionProfileDConst(double D, double dt, int NumSteps, double MinVal, double MaxVal);

		// Uses the current D(C)	
int DiffusionProfileDofC(double dt, int NumSteps, double MinVal, double MaxVal);

	// Performs BM-Analysis
int BMAnalysis(double Time, int MaxSteps, double Acc);

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Had the same problem.

Seems to be linked to using DLL's who themself depend on other dll's or possibly to dll's that contain C++ code I don't know.
There seems to be a bug in the DLL loading system because also data sometimes gets corrupted when calling functions through origin.

Found a workaround (which worked for my case anyway):

Say you want to include a dll called testA.dll who internally depends on TestB.dll

in the header file where you declare all the functions from testA.dll you want to call put in the very first line

#pragma dll(TestB.dll)
#pragma dll(TestA.dll)

Now before you compile change that to: (yes comment out the TestA.dll)

#pragma dll(TestB.dll)
// #pragma dll(TestA.dll)

Compile once (Gives you an error of course)

Now change to

#pragma dll(TestB.dll)
#pragma dll(TestA.dll)

Compile again and everything should work fine.

Don't ask me why but thats the only way I got it to work for me.

Hope that helped

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