Error when closing firefox(Firefox causes an invalid page fault in Kernel32.dll error)

[itsprabhu]

Hi all
I hav created a toolbar extension in firefox. Registration and other
activities r workin fine but when iam closin firefox iam gettin an
error sayin

"FIREFOX causes an invalid page fault in kernel32.dll"
Actually iam invokin other dll in xpcom dll  usind smart pointers my
code is

#import "sample.dll" no_namespace

_COM_SMARTPTR_TYPEDEF(Isample, __uuidof(Isample));

IsamplePtr sample1(__uuidof(sample));


MyComponent::MyComponent()
{
}
MyComponent::~MyComponent()
{
}


NS_IMETHODIMP MyComponent:: Xpcomfunc(void)
{
        sample1->Mauritius(); //function in sample.dll
        return NS_OK;
}


NS_IMETHODIMP MyComponent::Observe(nsISupports *aSubject, const char
*aTopic, const PRUnichar *aData)
{

        nsresult rv;
        nsCOMPtr<nsIComponentManager> aCompMgr;
        rv = NS_GetComponentManager(getter_AddRefs(aCompMgr));
        if (!aCompMgr)
                 return NS_ERROR_UNEXPECTED;
        return NS_OK;
}


static NS_METHOD MyComponentRegistration(nsIComponentManager
*aCompMgr,nsIFile *aPath,const char *registryLocation,const char
*componentType,const nsModuleComponentInfo *info)
{
        MessageBox(NULL,"Registration","Title",NULL);
        nsresult rv;
        nsCOMPtr<nsIServiceManager> servman;
        //nsCOMPtr<nsIServiceManager>
//      rv = XPCOMGlueStartup(nsnull);
//      rv = NS_InitXPCOM2(nsnull, nsnull, nsnull);

   rv = NS_InitXPCOM2(getter_AddRefs(servMan), nsnull, nsnull);
   nsCOMPtr<nsIComponentRegistrar> registrar =
do_QueryInterface(servMan);
   nsCOMPtr<nsIComponentManager> manager =
do_QueryInterface(registrar);
   servman = do_QueryInterface((nsISupports*)aCompMgr, &rv);
        if (NS_FAILED(rv)) return rv;
        nsCOMPtr<nsICategoryManager> catman;

        
servman->GetServiceByContractID(NS_CATEGORYMANAGER_CONTRACTID,NS_GET_IID(nsICategoryManager),getter_AddRefs(catman));
        if (NS_FAILED(rv)) return rv;
        char* previous = nsnull;
        rv =
catman->AddCategoryEntry("xpcom-startup",MY_COMPONENT_CLASSNAME,MY_COMPONENT_CONTRACTID,PR_TRUE,PR_TRUE,&previous);
        if (previous)
        nsMemory::Free(previous);
        return rv;
}



static NS_METHOD MyComponentUnregistration(nsIComponentManager
*aCompMgr,nsIFile *aPath,const char *registryLocation,const
nsModuleComponentInfo *info)
{
        MessageBox(NULL,"UnRegistration","Title",NULL);
        nsresult rv;

        nsCOMPtr<nsIServiceManager> servman =
do_QueryInterface((nsISupports*)aCompMgr, &rv);
        if (NS_FAILED(rv))return rv;
        nsCOMPtr<nsICategoryManager> catman;

        
servman->GetServiceByContractID(NS_CATEGORYMANAGER_CONTRACTID,NS_GET_IID(nsICategoryManager),getter_AddRefs(catman));
        if (NS_FAILED(rv))return rv;
        rv =
catman->DeleteCategoryEntry("xpcom-startup",MY_COMPONENT_CLASSNAME,PR_TRUE);

        NS_ShutdownXPCOM(nsnull );
//      XPCOMGlueShutdown();
        return rv;
  }
NS_IMPL_ISUPPORTS1(MyComponent, IMyComponent);
NS_GENERIC_FACTORY_CONSTRUCTOR(MyComponent)

static nsModuleComponentInfo components[] =
{
    {

        MY_COMPONENT_CLASSNAME,
        MY_COMPONENT_CID,
                MY_COMPONENT_CONTRACTID,
        MyComponentConstructor,
        MyComponentRegistration,
        MyComponentUnregistration,
    }
};

  NS_IMPL_NSGETMODULE(MyComponentModule, components)

And i hav a doubt whether i hav to Release sample1 ptr . Can anyone
figure it out wats d problem?

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