I am hearing reports that there are a lot of people that have troubles updating to the latest version.
Symptoms: the game will ask for new update each time you (re)start, if you say no you get an error and exit.
Here is how to fix this:
Step 1) download the latest zip file.
Step 2) remove the folder where you extracted the zip file (uninstall it, profile folder can remain.)
Step 3) From your “My Documents/LBZ Alpha Game Data” folder, remove the “engines” folder and lbzwin.exe.
Step 4) unzip the latest zip where you want to put the installation files.
Step 5) run lbzwin.exe from wherever you unzipped the game.