SUB / IDX subtitles not playing back or detecting

Hello

Excuse me if this question has already been asked, I tried searching but couldn’t find my exact answer so making a new topic.

I just bought the new WD TV LIVE with wifi inbuilt. I connected it to my wireless my book live hard drive via my wireless home network. I can see and access all my video files. Although a lot of my video files that i have also include subtitles in the form of idx/sub files which are not being detected when i stream the specific files. I was hoping somebody could help me with that.

I have updated to the latest firmware wirelessly before i tried playing it.

Thank You.

Are you using MEDIA SERVER function of the MBL, or just a Network Share?