I have just tried the "official" binary 4.2Beta1 package for Linux (http://downloads.sourceforge.net/ldview/ldview-4.2-beta1.x64.deb?download)...
Upgrade the documentation about Ubuntu version installation and/or compilation
I checked the code from CVS and it looks OK: case 2: // cm scale = 0.04f; break;...
STL is exported with 10x smaller scale