Subtitles issue with 3.X

I have been using Infuse on my Ipad and purchased the Infuse Pro 3.x version. Since then I have not been able to use the subtitle files (SRT) and Infuse does not recognize them. The SRT file is kept in the same folder as the movie file with the same file name. Is this a known issue. I am accessing my movie over the wifi connection to my WD wireless HD.