None of the Erasers work

CS4: I know it's something I've done that triggered that has brought this issue but I haven't figured it out. Anyone have any ideas? Thanks

if nothing works you may have accidentally locked the layer

if its just the erasers then check the layer blend mode - erasers don't work on every option

finally you could try resetting the erasers to default settings...

Thanks, I believe the easiest thing is to reset to default; don't have any special arrangements set anyway. Appreciate the input.