Shoutbox

Hi everybody,
I am recently experiencing this problem.
I have the message archive active, logging my conversations and contacts events log.
Now when I open the archive and try to visualize the event log, it does not show anything.
I've seen that events are logged in a .xml file. If I try to open the file from outside Messenger Plus, with my browser (I use firefox), it opens.
But it does not from the inside message archive of Messenger Plus.
What could be wrong?
AH, another thing: if I try to open the xml file with Internet Explorer, IE starts but quits at once without showing anything.
How could I fix it?

Thanks in advance,
Bl@de

P.S. I'm using latest version of both MSN messenger and MSN Plus Live. Running on Win XP Professiona edition, Internet Explorer 7, Italian