Glitch at very beginning of exported file using external hardware effects?

I removed ALL plugins… working with a single mono track in a montage. The external effect plugin is the only plugin loaded. It’s on the “track” plugins list. If it’s loaded into the master section, it won’t work at all. If it’s loaded into the track plugins, it works for playback… BUT, it’s still not rendering right. The very end of the clip is cutting out before it should… I’m losing the last 1/4 second or so, so I can’t print the file.

I’m editing dialog and trying to render through an external vocal compressor.