Need to know which module. Not all of them fails...

Error message:
terminate called without an active exception
Aborted (core dumped)

Which indicates missing thread::join

Occasional flickering. Worse if window is moved, or mouse enters.
Double buffering issue? At least sync with multiple videostreams and frame rates are bad.
Maybe change window manager?

After fixing #2 a new error emerged. It now just freezes after calculating max exposure brightness...

Packets are dropped and image frames are lost. Works somewhat OK with USB cameras, but GigE goes haywire. Suspect QoS issue and network UDP tuning.

When starting pub before sub, stream 2 does not publish anything. However stream 0 and 1 DO publish in the exact same scenario, with the same parameters...
this happened after adding QoS so I suspect something with that

Need to stream live video to ffmpeg for distribution by streaming server

The commander module must be able to accept JSON requests for remote control

Massages works on internal message bus, but is not propagated to DDS. Best example is "shutdown". Nothing happens outside internal modules ...

The windows displays random characters. Pointer issue.

It fails with:
OpenCV Error: Assertion failed (0 <= _rowRange.start && _rowRange.start <= _rowRange.end && _rowRange.end <= m.rows) in Mat, file /build/opencv-L2vuMj/opencv-3.2.0+dfsg/modules/core/src/matrix.cpp, line 483
terminate called after throwing an instance of 'cv::Exception'
what(): /build/opencv-L2vuMj/opencv-3.2.0+dfsg/modules/core/src/matrix.cpp:483: error: (-215) 0 <= _rowRange.start && _rowRange.start <= _rowRange.end && _rowRange.end <= m.rows in function Mat

Aborted (core dumped)

Must make a remote config editor + automatic config generation based on server environment (FPS / color /no color/ CUDA etc)