Your comments
It fails at "xhr.send(null);" in line 4261 when executed from a file:// url in Safari.function xhr(url, type, callback, errback) {
var xhr = getXMLHttpRequest();
var async = isFileProtocol ? less.fileAsync : less.async;
if (typeof(xhr.overrideMimeType) === 'function') {
xhr.overrideMimeType('text/css');
}
xhr.open('GET', url, async);
xhr.setRequestHeader('Accept', type || 'text/x-less, text/css; q=0.9, */*; q=0.5');
xhr.send(null);
I've downloaded your files locally to my Mac. When I try to use it locally in Safari (with the file:// protocol), it doesn't work either.
The same file does work in Firefox though, but not in Chrome and Safari.
The current version of Less seems to use XMLHttpRequest, which doesn't work with the file:// protocol - at least in WebKit.
So, this seems to be a bug in Less.
Please have a look at the discussion in this topic: http://feedback.textasticapp.com/topic/80258-i-have-been-trying-to-use-textastic-with-less-lesscssorg-and-i-have-been-unable-to-get-it-to-preview-the-html-file-correctly/
There you will find an example of how to to use less.css.
Another user there reported a problem with Twitter's Bootstrap, but there is a workaround.
If you install the bundle, there should be a "Monkey" entry in the list of syntax definitions which should be selected automatically if you open files with the "monkey" file extension.
I've made a screenshots of how it looks on my machine:
Not from within the app.
Is there an error message in the Console app when you start Textastic?
Do you have a link to the bundle you are using?
What did you try? Textastic doesn't include a less compiler, but less.js should work.
Customer support service by UserEcho
The problem is described here, too: http://stackoverflow.com/questions/3084892/less-js-not-working-in-chrome
It seems to be a security measure in WebKit so that web pages can't load arbitrary local files using XMLHttpRequest.