IrDa problem SmartCom

Hi,
Has anyone got working Smartrack + Smartcom on a Win XP Home SP2 system
?

On 2 systems, both loaded with XP Home, I get the same error when i
want to get the dives from the Smart Com.

The IrDa monitor finds and shows the "Smart Com" and for a while the
red leds are flashing. After that a pop up window shows:
"Error in infrared communication - Retry"

In XP I had McAfee (V9) closed, (I read in this forum could be a
problem )
In XP I had the Microsoft antispyware software closed
In the background no other programs running.

I tried various speeds ( till 9600) and other setting that were
possible in the IrDa device but they did not solve anything, (
sometimes the the device was even not recognized anymore)


After a lot of testing on various systems, I think the problem is in XP

1:
Another system, also loaded with XP home SP2, same IrDa device: exact
the same problem. (so it could be a defective IrDa device)

2:
File transfer between 2 XP computers worked as it should work. (so the
IrDa device is working fine)

3:
On the 2e computer I installed Win98 SE, with the same IrDa device it
worked right away with Smart Com.

4:
On another system with Windows 2000 Professional but other IrDa device
it also worked fine

Conclusion:
It is the combination of XP with Smart Com that doe not work.
Al others work well.

Has anyone this combination XP - SmartCom got working then I very
Curious how he dit that?
Special IrDa device ?
Other settings in XP ?

Regards and hope someone has a solution .

Kees