Thank you for your reply zentara

The problem is actually easy to reproduce. Consider appending the following lines at the end of the code

$l_Columns->insert('end', {
            'Col A'  => "Sample Text A",
            'Col B'  => "This is a \n sample \n text ",
            'Col C'  =>"Sample Text \n  C",
            'Col D'  =>"Sample Text \n  D",
            'Col E'  =>"Sample Text \n  E",                           
+     
                            }
                        );
[download]

There are several such entries in the file.

The observation : The newline character ( "\n" ) is removed and a multiline entry is printed as a single line which makes the entire data look too crowded. I have tried different options (assigning the string to a variable, arrays ,etc still it doesn't seem to work).
I really like this module because of the options it provides ( clean output, sorting ,etc) . I'd really like to find a soln to this problem bcoz it gets really messy when you try and piece together different modules to achieve the desired tabular display with sorting etc.
Help greatly appreciated.