Hi people, I’m new to the world of map editing and starting to love it (it really needs an update), so when I went around to the place and airfield through the object tool I noticed it crashes the software every single time! Im really gettin frustarted everything else works ok! the funny thing is that something (seems at random) it lets me place down some weird classes of the object group)

this is the screen shot of the error message
If there is a fix or something like a trick please let me know!!!
Thanks in advance