Posted by poikilos on Sep 19, 2014; 10:41pm
URL: https://forum.librecad.org/Can-t-zomming-with-the-mouse-wheel-in-2-0-5-version-tp5710330p5710446.html

That would be %LOCALAPPDATA% not roaming (%APPDATA%), and deleting %LOCALAPPDATA%\LibreCAD resolved the issue for me. I did install 2.0.5 over a previous version.