HELP Tiger kills Energy Saver

The problem is it seems to putting my Mac to sleep after only a few minutes of inactivity which is destroying my attempts to record Digital TV using My VCR.
Ben DeGough wrote on :
I just installed Tiger (Archive and Install) and now the Energy Saver System Pref wont open. All others, keyboard, Mouse Date Time etc are fine but when I click Energy Saver it says that it's loading and then many minutes later still nothing. The problem is it seems to putting my Mac to sleep after only a few minutes of inactivity which is destroying my attempts to record Digital TV using My VCR. Apart from that it's just annoying. Anybody got any ideas how to solve it short of yet another reinstall.