Hey there @Yohane1, welcome to the Discourse! First off, your town looks gorgeous, love the ship in the water! (That couldn’t have been easy to build ).
Anyway, first let me get some more information from you. Can you share your system specs? Specifically, Processor, Processor Speed, RAM, GPU, and Operating System.
Also, can you upload this save game to the Discourse? That would be a great way for us to test if it is a save issue or a computer issue. To upload a save game, locate the save in your install directory (default is
C:\Program Files (x86)\Steam\steamapps\common\Stonehearth\saved_games assuming Steam) and compress it to a zip file. If it is less than 10 MB, you can upload it directly to the Discourse. If larger than 10 MB, please upload it to a online file storage site like Dropbox, Google Drive, File Dropper, etc. and post the sharing link here.
Finally, as @Powerclank mentioned, the engine log you posted is a known building related error, but thank you for reporting that it is still occurring on the latest release!