I’ve just cloned bootstrap from the official github repository.
When trying to compile the less files using the official less app however, I get the following errors:

…in a number of files. I have in my index.html file:
<link href="../less/bootstrap.less" rel="stylesheet/less">
<script src="../js/less-1.3.0.min.js"></script>
With both scripts in the correct locations. The directory tree is as follows
-- bootstrap
-- js
-- html
-- less
-- img
-- docs
Is there something I am missing to deploy this correctly? I only want to do static html and javascript files for a quick prototype project.
Update: here is the problem i get on the command line trying to build via the make method. Using the latest less.js script from the official website.

It appears that this app just doesn’t support all the features of the Less language.
Check the official Node.js way for server-side compiling.
Related question on a different system (check the workarounds) : SimpLESS won't compile initializr generated Bootstrap