Ok, I rendered to wav about 20 times then is suddenly "fixed" itself.

There is a new twist though...when I set the "delay at end" to zero, the file size is cut in half! (from 7MB to 3.2MB!). BTW, 1 second doesn't change the size much. It seems to render correctly. However, a bit of the chord is cut off at the last measure.

I need the tune to finish at the end of the last bar. The 2 second delay at end carries the synth past the last measure.

Why in the world would 2 seconds double the file size?

I suppose I could import into Cubase and fade the measure sooner.