WinCC C-Script "strcat" Problem

Hello,

I have been having an issue and I believe I have it narrowed down. Has anyone ever had an issue with the "strcat" function in WinCC? My code is simple and is:
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pszIPAddress =GetText(lpszPictureName,"IPAddress");//Return-Type: char*
pszUserName =GetText(lpszPictureName,"UserName");//Return-Type: char*
pszPassword =GetText(lpszPictureName,"Password");//Return-Type: char*

pszPartA = strcat(pszIPAddress,",");//Return-Type: char*
pszPartB = strcat(pszPartA,pszUserName);//Return-Type: char*
pszPartC = strcat(pszPartB,",");//Return-Type: char*
pszLoginInfo = strcat(pszPartC,pszPassword);//Return-Type: char*

//pszLoginInfo = "192.168.16.160,admin,";
SetText(lpszPictureName,"LogIn",pszLoginInfo);//Return-Type: BOOL
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I have 3 strings that I need to take and convert to one single string for an ActiveX control, but when I use the "strcat" function, it causes WinCC to lock up and I have to restart my client or server that it is running on. The script works fine, it just seems to be causing the lock up because as soon as I remove it, issue gone.

Any thoughts?

Thanks.

I'm using WinCC V6.1 SP1

Here is the entire script:
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#include "apdefap.h"
void OnOpenPicture(char* lpszPictureName, char* lpszObjectName, char* lpszPropertyName)
{
char* pszLoginInfo, *pszPartA, *pszPartB, *pszPartC;
char *pszIPAddress, *pszUserName, *pszPassword;

pszIPAddress =GetText(lpszPictureName,"IPAddress");//Return-Type: char*
pszUserName =GetText(lpszPictureName,"UserName");//Return-Type: char*
pszPassword =GetText(lpszPictureName,"Password");//Return-Type: char*

pszPartA = strcat(pszIPAddress,",");//Return-Type: char*
pszPartB = strcat(pszPartA,pszUserName);//Return-Type: char*
pszPartC = strcat(pszPartB,",");//Return-Type: char*
pszLoginInfo = strcat(pszPartC,pszPassword);//Return-Type: char*

SetText(lpszPictureName,"LogIn",pszLoginInfo);//Return-Type: BOOL
}
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The details of the script really don't matter too much from what I can tell; I get the same result with even a simple script. Whenever I use strcat, it seems like I am getting a memory overload, like the script is continually concatinating strings or something. I tried using ApDiag but nothing out of the norm shows up.