Create new download file in orbit cannot capture actual flv file size?

after switching to vista from xp, grabpro can capture filesize of yourfilehost flv videos but during create new download, orbit did not capture file size hence download failed. however, same method no problem for youtube and some other sites downloading flv files using orbit. another problem is sometimes orbit... show more after switching to vista from xp, grabpro can capture filesize of yourfilehost flv videos but during create new download, orbit did not capture file size hence download failed. however, same method no problem for youtube and some other sites downloading flv files using orbit. another problem is sometimes orbit capture only filesize of 85k for wmv files instead of actual filesize. thanks
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