Debug Assertion Failed

[adrmateu]

Hi,
I´m working in a project that uses 3 dlls:
AutoLib.dll
CommLib.dll
GDCP.dll
and an .EXE.
MbConfigurator.
that uses those DLLs implictly linked.

It all compiled and linked fine, but when its running in Debug version, i´m getting this a "debug assertion failed!" when I call:

func1(){
...
TArrayStream* channelNames;   //TArrayStream is a class defined inside autolib.dll
channelNames=mapChannels->ReturnChannelsNames(); //mapchannel is an instance of a class defined inside GDCP.dll
delete channelNames; //when it try to destroy this object
...
}

i´m getting:
Debug Assertion Failed!
File: dbgheap.c
Line: 1132
Expression: _CrtIsValidHeapPointer(pUserData)

the code of ReturnChannelNames:

TArrayStream* TMapChannels::ReturnChannelsNames(void){
  size_t i, qtd;
  qtd=channels->GetElQty();
  TArrayStream* vector;
  if(qtd>0){         
    TChannelDevices* pChanEncontrado;
    vector=new TArrayStream(MAX_CHANNEL_NAME,qtd);
    for(i=1;i<=qtd;i++){      
      char buffer[MAX_CHANNEL_NAME];  
      channels->Get(i,&pChanEncontrado);
      pChanEncontrado->ReturnChannelName(buffer);
      vector->Add(buffer);         
    }
    return(vector);
  }  
  return(NULL);    
 }

I´ve researched, and I´ve founded out that I must run all the project using the same DLL. I´ve made it all the same but the problem won´t go away. Is there any body than can help me?
Thanks,
Adrian