Since you're saying you don't understand the error, I assume you didn't make intentional changes to the files inside the xonotic directory. If this is right then you can reset the thing following this process:
Start the shell.bat file
In the window that opens, type the following commands (capitalization is important):
When it's done you can type "exit" and press enter, or close the window. Then, start build.bat and see if it works. If it still doesn't, repeat the process one more time (doing this more than twice is useless).
On another note, I think you realized Xonotic 0.1 was released? If you're still having issues with git, consider using that instead.
Start the shell.bat file
In the window that opens, type the following commands (capitalization is important):
Code:
cd /xonotic
./all clean -fUOn another note, I think you realized Xonotic 0.1 was released? If you're still having issues with git, consider using that instead.



![[Image: 4XODR.png]](http://i.imgur.com/4XODR.png)