If you're on Windows, open a command prompt in the game's folder, then run:
Silverpine.exe > log.txt 2>&1
It will create a log.txt file in the same folder. Reproduce the bug, then upload the log somewhere like Pastebin.
If you're on Linux, open a terminal in the game's folder, then run:
./Silverpine.x86_64
It will directly output to the terminal.