@Radegast thanks for the fixes. Tried the commit for the original C++ builder (https://github.com/JanSimek/F2_Mapper_Dims/commit/09ca0269d587d84019633107feae3365398631d0).
As far as epax is concerned, I uncommented lines 796, 901 in main.cpp and 75, 80 in frmset.cpp to get the roof in epax to...