Hi H_STAR,
Yes, I can see that now, the problem is the reference to trace.hpp was not included in the makefile, so “make dist” which we use to build that bundle did not pick it up.
If you download the source code bundle from here
https://github.com/OpenSourceRisk/Engine/archive/v1.8.3.0.zip
It should work.
Regards,
Niall.