Since this guy can barely form coherent sentences, let alone trace console, I'm going to cover some possibilities.
It is possible there are permission problems in your Blockland folder. Right click on BlocklandLauncher.exe (or a shortcut on your desktop if you use one) and click Run as Administrator.
It is also possible that an add-on corrupted and attempting to unzip it is causing a crash. Please rename your add-on folder temporarily (Go to My Documents, double click the Blockland folder, then right click on Add-Ons and click Rename. Type in Add-Ons2 or something). Start the game. Does it still crash? If not, delete the Add-Ons folder that was created and rename your Add-Ons2 folder to Add-Ons.
If you can figure out how to trace, that would be exceptionally helpful. We can read your console and see where the error is occuring, tell you if it's an Add-On or any other possible causes, and do numerous other things to diagnose the problem.