@martinpies Hello Martin,
Thank you for your feedback. I'm sorry to hear that you are struggling with using REXYGEN Studio. In version 2.50.12 there is a known issue with the closing of diagnostic protocol. The recommended workflow is disconnecting completely from the target (F8) before Compile and Download (F6). In other words - avoid reconnecting to the running target when developing the project.
Please, let me know your findings.
Cheers,
Tomas