XY to line/distance between matched points

Hi,

I'm trying to find the distance between matched points, or to somehow compare the results of one geocoding method with another to see how close the results are. I have tried the method using XY to line here:

http://kb.mit.edu/confluence/pages/v...ageId=11338190

using both a geographic coordinate system and a projected coordinate system. The unique ID field that I choose is never populated in the resulting attribute table, and one set of x and y fields is "<NULL>" -- which makes me think that I'm doing something wrong, but I have no idea what. Any suggestions would be appreciated.

Thank you,
Robert