Jack wrote
This is not a good answer for you but you can use this solution to send the message |dsp 1(.
Miller wrote:
I can suggest many possible workarounds, but will get around to fixing this someday.
Thank you both; don't worry for solutions/workarounds: I wasn't using this message very extensively so it was trivial to work it around without need for an especially elegant or general solution: I just changed the message.
The difficult part was to figure out what the hell was going on :)
I was simply curious to know whether it was a known/unknown bug or an undocumented feature.
Thanks again.