Same here. Windows froze on second level.
Hey, sorry about the crashes. If you two can post your logfiles here that'd let me see if I can help. (pastebin.com works well for this)
Mac: ~/Library/Logs/Free Lives/Second Earth/Player.log
Windows: C:\Users\username\AppData\LocalLow\Free Lives\Second Earth\Player.log
Linux: ~/.config/unity3d/Free Lives/Second Earth/Player.log
The full text is too much for pastebin.
Here's a portion of the texts. Most of them repeat themselves. Hope this help.
https://pastebin.com/TTHfy53D
Same problem, to big for pastebin, added a viewable file at google-drive: https://drive.google.com/file/d/1d81B1TDE4S4rix8H08CVwfymrVz0fuGC/view?usp=shari...