Problem with Shopping.asp in Tutorial 4

I am working on Tutorial 4, and I'm having a problem with the Shopping.asp file that I downloaded. When I run the original file, I get the following error

Error Type:
Java Exception (0x80004005)
java.lang.NullPointerException
/Content/Screen_Scraper/shopping.asp, line 82

This is line 82
For i = 0 to objRemoteSession.GetNumDataRecordsForDataSet( "DETAILS" )

I've tried different variations of this line to no avail. I get various error messages. Any help would be appreciated.
Steven
:?

Problem with Shopping.asp in Tutorial 4

Hi,

There are a couple of possibilities

1. The "DETAILS" data set isn't being saved in a session variable. Remember that under the "Advanced" tab for your "DETAILS" extractor pattern, you need to check the box labeled "Automatically save the data set generated by this extractor pattern in a session variable".
2. You've named the extractor pattern something other than "DETAILS".

Feel free to post a reply if neither of those suggestions help.

Kind regards,

Todd Wilson