This solution adds at the very least an extra hour to all of our projects and seems to me to be a very clumsy way to achieve a function that used to working perfectly well.
Has anyone found a better workaround for this issue or is it a case of letting our investment of several thousands of dollars slip away into the cold dark depths of technological advancement!
I don't think they are saying that you have to convert your version 20 file back to 18 and then save as a BIMx file.
You save the BIMx for version 20 and open it with the version 18 BIMx desktop viewer.
I just tried it with a very simple model and it seems to work.
However it seems you still can not change the global illumination or change other settings and re-save from the BIMx application.
Which then forces you to back save in Archicad to version 18 and then save as a BIMx file that you can then manipulate and re-save in Archicad.
I have only done a very quick test though.
One of the forum moderators.
Versions 6.5 to 25
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Dell Precision 3510 - i7 6820HQ @ 2.70GHz, 16GB RAM, AMD FirePro W5130M, Windows 10