Instead of Publishing as a BIMx Doc file you can view your model in the 3D window then FILE > SAVE AS a BIMx file.
Just change the file type to BIMx.
This will give you a standard BIMx file that you can open with the standard BIMx viewer on any machine but it will not have the PDF docs with it - only the Publiser does that.
From the BIMx viewer you can now just save the file - there is no such thing any more as a Windows/Mac/iThing version.
The file no longer contains the built-in executable viewer program - you have to download that separately for each system you want to view the file on.
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