XML Publisher - Error - file does not begin with ' pdf-'

All,

I have created a XML Report. Did everything from registering the concurrent program with XML Output.
Created Data Definitions from XML Publisher Administrator responsibility.
Created Teplates from XML Publisher Administrator responsibility.
Here i have given the type = Microsoft Excel.

I ran the Concurrent program. When i click the "View Output" button, it gives me the following error message "file does not begin with '%pdf-'"

I have given the type as Microsoft Excel, but when i check the Concurrent Program > View Details > Options
I see that the format is as "pdf".

On further investigation i see that the following SQL Statement does not return any rows: