Shift key broken in one application

Does anyone know how to fix a non-functioning shift key that only shows up in one application under Dosemu?

I'm trying to use the Nota Bene word processor (v. 4.5). I can't get capital letters with either shift key.

The shift keys work fine in every other application I've used under Dosemu.

I'm running dosemu 1.0.2

Any troubleshooting tips or fixes appreciated.

Thanks.

Curt