Windows 7: System restore in Task Scheduler – no longer exists, help needed

Hi, I was trying to reduce the amount of times system restore was occurring on my PC, so I accessed System Restore in the 'Task Scheduler' and changed the 'trigger' from daily to monthly, and I changed the date to the 12th of each month and changed the time to 6am too. I'm not sure if this has anything to do with it, but at the time, windows was also installing updates, which were lots of security updates for Microsoft . NET Framework 4 Client Profile. After the updates, and the changes I made in the 'Task Scheduler,' I restarted my computer, and now when I access Task Scheduler, the sign 'The selected task “{0}” no longer exists. To see the current tasks, click refresh,' comes up... But this only comes up once, and then again, when I click on the 'system restore,' file, which now has no information displayed about it, so I can't access it, so obviously something is wrong with this 'system restore,' file in the task scheduler.... I have tried using the system restore option to a previous point, but that just makes things worse, where I can't access 'Task Scheduler and Event Viewer.' So I undid this system restore, and am left with the problem described above, where it says
'The selected task “{0}” no longer exists. To see the current tasks, click refresh.'
Any help appreciated on how to get things back on track.


Regards
Kelly.