Okay, I managed to find the setting for that again ( on the main interface of Eraser, you simply double-click on the name of the drive, select "Properties" and on the "Data" tab you'll see "When Finished" down at the bottom).
It says "When Finished" and it - supposedly - gives you the option (on the drop-down menu there) of selecting either "None"/"Restart"/"Shutdown System".
It's easy to see what the problem is:
Select (click on) "Restart" in the drop-down menu. At that point, you should be able to click off to the side of that and the "Restart" selection would go from being blue to a neutral color (to show that it had been selected). It doesn't do that - it remains blue (actually, "None" remains blue, also whether you select it or not).
At any rate, if you then click "Okay" (thinking that you're done), the "Task Properties" window vanishes without making the change. You can prove that by immediately going back to the "Task Properties" window - the "When Finished" box is going to say "None" - just like it did before you started.
Yeah, it'd be great if that got fixed. Pete