getting KERN-EXEC 3 panic while implementing information dialog in UIQ 3

i am implementing a info dialog in uiq 3

its like there is a list box implimented and in the HandleListBoxEventL i am implementing the
info dialog
the code goes like this :-

void CImailView::HandleListBoxEventL(CQikListBox* aListBox, TQikListBoxEvent aEventType, TInt aItemIndex, TInt /*aSlotId*/)
{
switch(aEventType)
{
case EEventItemConfirmed:
case EEventItemTapped:
{
switch (aItemIndex)
{
case 0:

// Retrieve list box data, the data returned is Open().
MQikListBoxData* listBoxData = aListBox->Model().RetrieveDataL(aItemIndex);
// Make an InfoMsg on the name of the confirmed or tapped list box item
iEikonEnv->InfoMsg(listBoxData->Text(EQikListBoxSlotText1));
// When done using the list box data it must call Close().
listBoxData->Close();
break;
case 1:
LaunchTextDialogL();
break;
case 2:
// Displays an information dialog
iEikEnve->InfoWinL(R_DIALOGS_LISTVIEW_INFORMATION_DIALOG_TITLE, R_DIALOGS_LISTVIEW_INFORMATION_DIALOG_TEXT);
break;

in case 2 i am implimenting a the info message n getting a panic in the same line
KERN EXEC 3

can any body help
or tell me the mistake in the code written by mee

plz help