Undefined Value Error

Question

I'm getting an error I've never seen before:

The system has attempted to use an undefined value, which
usually indicates a programming error, either in your code or some
system code.

This is a simple cfmail page of about 64 lines of code and
I'm not seeing anything out of the ordinary here. I'm pretty sure
the error is in the cfmail tag or referrer. This is in test mode,
no real data here. The datasource name is removed from the code
below.

Thanks for the help folks!
David

Referrer:

http://cpfaa.org/thankyou.cfm?Amount=65.00&EmailAddress=inkfast@yahoo.com&CreditCardType=Visa&expDateMonth=01&expDateYear=2010&CFID=10763996&CFTOKEN=73235247

Dan_Bracuk · Answer

The cfoutput tag inside a cfmail body tends to fail when I do it, but the error message is different.

To troubleshoot, put these two lines at the top of your page.

<cfdump var="#variables#">
<cfabort>

Then keep moving them down until the error occurs. Then you will at least know the line of code that caused it.

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