@kimchi-tan for lloyd, yeah. i use him in other songs and he works fine. i haven't tried yet for makimiya though (but i saw that when i tried to make him sing the ja part, that's when it crashes). oddly enough, ron gets that error too when you try to make him sing the harmonies of the song.
The oto is a bit wrong (you might want to look at this for reference: http://ch.nicovideo.jp/delta_kimigatame/blomaga/ar533241) that shouldn't make UTAU crash :/ What resampler are you using? And is its frq files okay? Badly generated frqs may cause crashing.