Imtoo Audio encoder problem converting MP3 Files (uses lame encoder)

well ill show u a screenshot first

http://img132.imageshack.us/my.php?image=imtooerrorjf1.jpg

it always converts the first song and just errors out at the end and wont continue to the next song but it still completes right even when it goes to 99% i dont know if i have some codecs interfering with each ohter or what or if its imtoo but help would be really appreciated im trying to convert music files smaller so i can put em on my ipod and fit tons more plz help. thx in advance