Adobe Air and Excel file

I have my application running in a adobe air which gives options to the user to open the reports in excel, csv file, rtf and pdf options. I am able to open those files or atleast gets an option to save the file on the machine for IE, firefox, Goodgle chrome. But in Adobe Air it just gives a blank page and not even gives me an option to save the file as other browser does.. Has anyone have an application that gives an option to open the file in excel or or any format and did they face any issues...
I am just stuck here, can't proceed further, so any help would be appreciated..