Itunes Error Correction

I have read here and elsewhere that it is advisable to use error correction when ripping into Itunes. For the momemnt, I am a PC user, and I rip to Apple Lossless. When I "checked" the error correction box in itunes preferences, i could not get itunes to rip any tracks. it just quickly skipped over every track. Any thoughts on why this would be?

in any event, how important is error correction? is it merely usefull to clean up pops caused by an imperfect disc, or does it do something beneficial even when ripping a new/clean disc?

thanks for any advice.