On Dec 21, 2009, at 3:00 AM, Lutz Haseloff wrote:

2009/12/19 Taco Hoekwater <taco@elvenkind.com>

Hi,

This was a bug in luatex: the function that copies the font
information from the base font to the expanded font did not
copy the last glyph at all.

[snip]

Lutz Haseloff wrote:

Hi Michael,

Your file works here without problems with the same ConTeXt and
LuaTeX, Version beta-0.47.0-2009121623.

That's weird, did you use Michaels font?

I don't think so:

My OctavianMTStd.otf:
Version 2.040;PS 002.000;honconv 1.0.51;makeotf.lib 2.0.18671

Greetings Lutz