Hi Jürgen,

hope you find some time to look into this.
If I can add something, from what I'm reading, tehre is no problem with these messages in general, you can ignore them:

!Command 45 not yet supported
!Command 43 not yet supported
!Command 172 not yet supported

But what I'm experiencing is that when trading and entering a position, the API starts to send neverending loops of the same message:

!Command 172 not yet supported

what can't be good if you leave the system unattended in a VPS.

I understand these messages are comming from the API, so perhaps simplifying the API would help.

Have no experience with dll but will also put some time on it.