It could be that there may have been a bad spot on the original disc that you loaded in Hoster. I find this to be the case often. I buy 99% of my discs on Ebay. Many times I buy used ones from KJ's going out of business. And yes sometimes they are scratched. I therefore use Microstudio to re-record them and THEN load into Hoster.
I would suggest going back to your original and play it and see if it skips in the same place.
Kelly