Here's the green bar

Here's my script
Loadplugin("C:\Program Files\AviSynth 2.5\plugins/MPEG2Dec3.dll")
Loadplugin("C:\Program Files\AviSynth 2.5\plugins/Decomb521.dll")
MPEG2Source("C:\Documents and Settings\Lee.DENCOMPUTER\Desktop/brolly.d2v")
Is there anyway to fix this?