I try to run SD40 with my Tyros5.
Midi conection work only in Acordion mode on SD40.All ather option SD40 ignord.
It's inpasable to modeling intro and ending parts of style.
Swiching betven some main section (A;B;C;D) sometimes work properly,sometimes change section who you dont chouce.Example:
you want to change main variation from D to A,but SD40 change to B or C...
Registration cant remember with wich Intro you want to run a Style.ETC...
In one word,I buy an instrument who I cant trust for 1.500,00 Euro. Dont make the same mistake like I do...
I played with one for several hours....
None of the bugs you say where ominent...
I played it from both a 2 manuall organ (roland) as well from a stagepiano... both modes worked well..
Are you sure you are using the latest software version?