Hi Lucid,
I found out a topic (http://discourse.weather-watch.com/t/30836) about 1-wire sensors and WD . It seems other people are having same issues.
Brian suggested all of them to remove some files from WD folder top get the newest one installed with Oneviewer , in I have understood good.
The files are
IB10E32.dll
IB90USB.dll
IB97E32.dll
IB97U32.dll
IBFs32.dll
I posted a question to Brian and I will check what he suggested. Yes I have WinXP
Thanks for your help…and patience and congratulations for your website !!!