Had this problem myself. Fixed it with this:
To fix this problem:
* Make sure Blockland is not running.
* Open "My Computer"
* Navigate to your Blockland folder (default is C:\Program Files\Blockland )
* Navigate to the base\config\client folder
* There should be a prefs.cs file in this folder (it may appear as just "prefs") if you have file extensions turned off.
* Open this file in notepad. Double click the file, choose "Select the program from a list", then choose notepad.
* Scroll to the end of the file and paste the following lines of code:
Code:
$pref::OpenGL::disableEXTCompiledVertexArray = "1";
$pref::TS::UseTriangles = "1";