External subtitles - some work and some don't

[aclondon]

So I'm trying to figure out why some subtitles work and some don't.


MovieA and MovieB are bother .AVI files with SUB/IDX named the same in same folder as the movies.
Both movies have the same language (ENglish) and both play fine from a PC with VOBsub installed; so I know the subtitles streams work fine.
So I've enabled the 'Add subtile language to title menu in the logging options.
I can see the MovieA in listed as 'MovieA(EN)' but the second movies just lists as 'MoviesB' without any subtitle specified.

BTW I have the same issue with .SRT files!

I gone in to each file on the media library and re-loaded the subtitles and it shows in subtitles properties with the subtitles available and in English. Yet some files it will work with and other it will fail to display. I'm yet to find out what is the reason some work and others don't???

Thanks in advance for any help.
Adam.