how to load another video

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C#

i'm using this library and try to load another video by browse it from my folder. but it become error.
this message error from try and catch exception which says

"System.Exception: Exception in VideoStreamGetFrameOpen!<br />
at AviFile.VideoStream.GetFrameOpen()<br />
at Interlace.Video.ShowFrame() in E:\My_Projects\Interlace\Video.cs:line 50"

I debugging this, and this message show when debuger come to an aviStream.GetFrameOpen(); and then all syntax under this until aviStream.GetFrameClose() not compiled.

I really need help, because i hope i can use this library to my final project.
please help me as soon as possible.