Thanks Hertston.

At least I'm not alone in this. Was afraid of a Vista-issue.

I can see the change in color and status. And I agree, stange behaviour indeed.  Not a shop stopper however. [:D]

You're looking at an 85 MB DL plus the update to 3.8 (another 80MB).

Subject too long ... sorry.

I'm running 3.8.0.0 on Vista Home Premium.

<t> I'm working my way through the tutorial. In scenario 3 (sensors) I'm supposed to set active sensor.<br/>
I select the Puller, click on Senors and select Sonar (Act) and click OK.<br/>
<br/>
When I return to the sensors windos, Sonar is set to passive again.<br/>
<br/>
what am i doing wrong ...