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Origin Version (Select Help-->About Origin): 75G SR3
Operating System: WinXP

I need to call C functions from an external DLL.
Everthing works fine except that for one function I get corrupted data except when I start Origin from the VS2003 debugger. If I step through the DLL'code from VS2003 when origin calls it everthing goes fine. If I run the DLL (both the Debug or Release build) stand allone in origin the data gets corrupted.

The function works fine btw. I called from a C test program and everything works OK. Only when calling it from Origin the memory gets corrupted.

Any suggestions ?

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// 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);