Just to update in this thread with the latest from original - qpid-proton - Exception in send sample, in Win32-Apache Mail Archives<https://lists.apache.org/thread/m41jtto9z52rhpcmkb4cyytb73yrjg3q>
We have experimented with other build options in Win32, We tried Release, RelWithDebInfo and RelMinSize - the exception persists in ALL but RelMinSize, where it seems to work as expected, we see the messages in the broker (I am using RabbitMQ on localhost:amqp), Andrew North SOFTWARE ENGINEER RESEARCH & DEVELOPMENT