Hi,
This is a problem I encounter every time I switch my tree to non-obsolete mode.
i switch on "YES" on this message
**"File data structure of the world is obsolete and needs to be changed. do you want to change it now?"**
{F3171100}
I don't get a crash when I press no, but I get a lot of errors due to the wrong GUID.
{F3171107}
{F3171106}
{F3171105}
{F3171104}
My source file with error : https://drive.google.com/file/d/1sglOE-ECfraGiorUUua7mH6w4jLGc9b7/view?usp=sharing