I am getting a blank page when I click on "Custom player generator" why?

i want to stream thru lighttpd but streaming is not working.i can't jump forward in the video, i must wait for buffering

please help me out on resolving this issue

This is question to support not forum discussion.
We can't know what is your URL, what is your specific script.

Thing like lighttpd http streaming is always individual server settings, user case to know how to set media files links.
Setting player provider to "http" is not enough. We assume that when user wants to use such streaming - he knows what he has on his server (lighttpd) and how to configure it to stream with player. This is same with any other player.
Of course we can always help - but if this is not one of supported scripts with default settings - such help cannot be a matter of free service.