LSX Premiere plug-in problems

[BMV]

In Premiere, when I add my video clip and attempt to export to the lsx plugin, I can't modify the variable bitrate settings because whenever I click on the advanced button under video settings, Premiere immediately completely closes itself without any kind of error message displayed. Has anyone else had that happen to them? Is it possible to edit premiere project settings? the 20 predefined settings that come with the LSX plugin are great, and with a few alterations, one of them in particular would be PERFECT for creating SVCDs. I think only the bitrate and resolution would need to be changed, but I can't figure out how to do it.