Thanks for posting your console log.Please go to "C:/Users/zafar/Documents/Blockland" and delete the file called "cache.db".
Does this happen when you start a singleplayer game using the Freebuild gamemode? Post a console log of that.
OP, please make sure that your Blockland folder is not read-only.
Disable all of your addons except default.and see what happens.
Also, the settings and whatnot keep resetting along with Slayer asking me if I want to update each time I start BL.
Because blockland doesn't quit the way it's supposed to and therefore doesn't save any prefs