[dvd::rip] Subtitles error

[dave <sam@xxxxxxxxxxxxxxx>]

Hi All,
Under the "Subtitles" tab.
Clicking on the "Preview window '->Open' " button I get this error:

An internal exception was thrown!
The error message was:

can't read  at 
/usr/local/lib/perl5/site_perl/5.10.0/Video/DVDRip/SrtxFile.pm line 53.
Subtitles are all rendered OK when I Transcode this movie. It's just the 
Preview window that doesn't work.