WM Capture cutting short recordings

[mrwonker]

Hi I left WM Capture to record some streaming video. in the settings I have the stop if file size is longer than blank and if time is longer set to 4hours I came back to my computer 3 and a 1/2 hours later and it was still recording stopped the recording as it had finished waited for the programme to complete the file but when i came to view it I had only got the first 52 minutes, any ideas why this has happened and what i can do to rectify this problem.
Thanks.