HELP!!! DTS: Invalid Pointer Error

I searched the archives but couldn't find anything on this yet...

I am using the wizard to grab selected data from 6.5 Server1 to insert into a table on 6.5 Server2, no transformations necessary.

I've tried it two ways (actually more, but two ways will demonstrate the problem). The query I run to grab the data is search through approx 6.5 million records in poorly indexed tables, on a slow machine. Takes approximately 45 minutes to run the query alone, and right around the same to run the DTS package.

The difference between the two queries in the two different packages (all else equal), is that the first uses a variable to calculate a date to filter the where clause. The second hard codes the date in the where clause. The second works, but the first runs about 40 minutes before returning a Transfer Failed error that reads "Invalid Pointer". No error number, nothing in the Books online about the error.

The queries are as follows:
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QUERY 1 (calculates the date for 11:00 PM night before last)

Declare @DateLastReceived datetime
Declare @CharLastReceived varchar(25)

Select @DateLastReceived = DateAdd(dd,-1,getDate())
Select @CharLastReceived = Convert(varchar(25), @DateLastReceived, 101)
select @DateLastReceived = Convert(dateTime, @CharLastReceived)
select @DateLastReceived = DateAdd(hh,-1,@DateLastReceived)

select s.SerialNumber as iwSerialNumber, MAX(p.ReceiptTime) AS iwLastReceived,
p.PurchaseOrderNumber as iwPO, s.Revision as iwBomRev, s.PartNumber as iwPartNumber
From SLOCAZ s INNER JOIN PORDRZ p ON s.SerialNumber = p.SerialNumber
Where p.ReceiptTime > @DateLastReceived
And ( (p.PurchaseOrderNumber Like 'BD%')
OR (p.PurchaseOrderNumber Like 'TP%')
OR (p.PurchaseOrderNumber Like 'DM%') )
GROUP BY s.SerialNumber, p.PurchaseOrderNumber, s.Revision, s.PartNumber

***************************************
QUERY 2 (Hard codes the date)

select s.SerialNumber as iwSerialNumber, MAX(p.ReceiptTime) AS iwLastReceived,
p.PurchaseOrderNumber as iwPO, s.Revision as iwBomRev, s.PartNumber as iwPartNumber
From SLOCAZ s INNER JOIN PORDRZ p ON s.SerialNumber = p.SerialNumber
Where p.ReceiptTime > 'Aug 29 1999 11:00PM'
And ( (p.PurchaseOrderNumber Like 'BD%')
OR (p.PurchaseOrderNumber Like 'TP%')
OR (p.PurchaseOrderNumber Like 'DM%') )
GROUP BY s.SerialNumber, p.PurchaseOrderNumber, s.Revision, s.PartNumber

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I should also note that I thought maybe the hard coded date being used as a string was the difference, so I tried the following (which just converts the date back into a char variable and uses the char variable in the where clause)

Declare @DateLastReceived datetime
Declare @CharLastReceived varchar(25)

Select @DateLastReceived = DateAdd(dd,-1,getDate())
Select @CharLastReceived = Convert(varchar(25), @DateLastReceived, 101)
select @DateLastReceived = Convert(dateTime, @CharLastReceived)
select @DateLastReceived = DateAdd(hh,-1,@DateLastReceived)
select @CharLastReceived = Convert(varchar(25), @DateLastReceived, 100)

select s.SerialNumber as iwSerialNumber, MAX(p.ReceiptTime) AS iwLastReceived,
p.PurchaseOrderNumber as iwPO, s.Revision as iwBomRev, s.PartNumber as iwPartNumber
From SLOCAZ s INNER JOIN PORDRZ p ON s.SerialNumber = p.SerialNumber
Where p.ReceiptTime > @CharLastReceived
And ( (p.PurchaseOrderNumber Like 'BD%')
OR (p.PurchaseOrderNumber Like 'TP%')
OR (p.PurchaseOrderNumber Like 'DM%') )
GROUP BY s.SerialNumber, p.PurchaseOrderNumber, s.Revision, s.PartNumber

************************************
This still didn't work...

Any Ideas on what is happening and/or how to fix it???
Amy