From: Raj Sahae <rajsahae@...>
Date: 2007-02-23T20:20:42+09:00
Subject: Re: undefined method `at' for nil:NilClass in parseexcel.hel

I don't know anything about the parseexcel library, but I can at least 
explain the error.
The error you are getting simply says that the object"row", which is the 
parameter you pass into your block from worksheet.each, is an instance 
of Nil, and not an Array.  So either the parse, workbook, or worksheet 
is returning Nil somewhere.
>> require 'parseexcel'
>> workbook = Spreadsheet::ParseExcel.parse('2007-02-231028.xls')
>>  worksheet = workbook.worksheet(0)
>>  skip = 2
>> worksheet.each(skip) { |row|
>> # a row is actually just an Array of Cells..
>> first_cell = row.at(0)}
>>     
>>  Error is:undefined method `at' for nil:NilClass 
>> I can not understand the error. please help me as i am a niwbie in ruby
>>