Level Editor crashes when Saving

[RedMser]

Hey everyone,
I am having this issue a LOT and it really slows down my work flow...

Basically, there are two conditions when the editor crashes when I try to save a custom level of mine.

- Either, it crashes if I do any changes to terrain and then try saving. May it be adding undergrowth, changing height or whatever.

- It also crashes when I edit the level, save, do more changes and then save again! Always the second save, no matter what I change (even just moving one entity around).

I put the whole LevelEditor.log on pastebin here if anyone needs it. Can't say for sure if it includes relevant infos.

I also have to state that, for this level, I copied the .hpm file of another map and renamed it (changed the ID in the first line too) to copy over map properties.
This crashing issue did only start happening as the map grew in size, though. Before that, I was having no issues with crashing. I can't say for sure what the cause is, but those two crash conditions listed above are consistent.

If anyone needs the map files to test for themselves, please let me know!

Thanks for any help,
~RedMser