I have been using XP and XoloX and have never encounter this problem. Even when the 1.18 beta was out. only had the 1.19 bug which has been fixed. I do not know what could be causing this. It sounds kind of odd. try reinstalling 1.20 and see if that fixes it. I do not think it is your modem. I use a dial up
and it has never given me a problem. Sounds more like a file being misread causing the error.