Keep Getting Error Message about Tamper Monitor Needing to Close

Since last night I have been receiving repeated messages anywhere from 5 to 15 minutes apart about how Tamper Monitor has encountered a problem and needs to close. Sorry for the inconvenience.  A search online brought me to Safety Minder.  I'm not sure what's going on and need help figuring it out.

 

I've tried just restarting.  I tried to uninstall Safety Minder but its not listed under the Control Panel in Add/Delete Programs.  So I tried to install it and it tells to me retstart because it hasn't completely installed.  I've done that twice with no change.  When I check my kids users, There is no paw in the systray (is that what it's called?  Down in the lower right corner?).  But when I log in it has all the users that I initially set up.  I assumed those would be deleted when I uninstalled.  But even after trying to install Safety Minder again, its still not in Add/Delete programs.  It slows down my computer everytime a message comes up.

 

And, the messages still keep coming up. 

 

Please help.