stucking may be color sheme and propably is (I got my player stucked for a couple times before I find right color sheme)
do not delete these subtitles you created
just create another but for same movie with txt2vobsub default settings and replace just idx file name it same (do not touch sub file which you created)
and you are the guy that wrote the txt2vobsub, so if you dont know...
maybe its one of the colors in the sub2vobsub?
maybe i will enable the color overide and put some transparant color?
any hints?