try this :if my index.haml is like this:

.container hello

only one line is ok;

if add a line:
.container hello
  .span-24 body

then the erro similar will occur
.in `generate_html': undefined method `line_offset' for
#<Haml::SyntaxError:0xb7a36558> (NoMethodError)

if i change it to
.container hello
.span-24 body

then it is ok again. notice I removed the space or tab in front of the
second line.(I tried space and tab both) so it look like it will not
recongnize it .

I tried netbeans and komodo editor, for fear it's the problem of
identation? but all seems similar