Cannot Import Xls file

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Export a file and save it in local location.Don't open the file
2. Import the same file.
3.

What is the expected output? What do you see instead?
 if we try to import file without opening it return a null object reference as at com.as3xls.xls::ExcelFile/dimensions()[/Users/manuelwudka-robles/Documents/Flex Builder 3/as3xls/com/as3xls/xls/ExcelFile.as:619.
if we open the file and save again alert shows that it is a Microsoft Excel 2.1 
worksheet.Do you want to overwrite it with the latest format.
If we click yes it will import successfully else the same issue happens.

What version of the product are you using? On what operating system?
Windows XP,Office 2003

Please provide any additional information below.

Original issue reported on code.google.com by [email protected] on 12 Aug 2011 at 6:44