You can paste your console.log using
Pastebin. Simply press CTRL + A inside the notepad window while opening the console log to grab all the text, then press CTRL + C. After that, paste it using CTRL + V onto Pastebin.
If you're playing on Steam, try doing what phflack said by going to the Steam libary folder and then into the common folder. Rename the folder named
blockland to
blockland2 and then go to your list of Steam games. Right-click Blockland and select
Properties from the drop-down menu. Then, click the tab that says
LOCAL FILES and then click the button that says
VERIFY INTEGRITY OF GAME CACHE to force Steam to download the missing files again. Try hosting using this clean install and see what happens.