Cannot detect win7 PC under time restriction configuration

Hi,

I have previously setup everything correctly and have setup time access restrictions for a child account.

The time restriction was to allow the child to focus on studies by limiting hours spent on the PC.

Now that it's vacation time, I tried changing the time restriction configuration and I found that I can no longer do so.

The PC is not listed under the devices available under the time but when I go to device the PC.

I am however getting the alert message: " We cannot monitor your child's activity with Vista Parental Controls installed."

Please help me figure out what's wrong and how to fix this?

 

kind regards,

Christian