Posted by Rallaz on Dec 06, 2012; 10:28am
URL: https://forum.librecad.org/Lines-went-to-infinity-tp5707037p5707275.html

Tests made with winXP-32b, openSuse-64b & LUbuntu-64b 12.10 using Gear-Small.dxf and same result in all

When Opened with LC all layers are "help layer" except 0
Changed all to NO "help layer"
Draw a line then press ESC to finish command line
Click in undo button to remove line
"File->save as..." saved as Gear-SmallRLZ.dxf
Close LC, reopen LC and Gear-SmallRLZ.dxf
result: all layers are normal layers NO "help layer"

I can not reproduce your problem :-(
Gear-SmallRLZ.dxf.zip