Google Analytics Campaign: 0 visits, dozens of pageviews

Hi,
A client of mine is running a marketing campaign that will display ads on someone elses site. The owner of this site asked for a tracking URL. Since we use Google Analytics, I simply used the Google Campagin builder tool to make this URL:
http://mydomain.com/mypage?utm_source=nick&utm_medium=banner&utm_campaig...

I tested the URL and now have data showing up in Google Analytics. However, the campaign report shows 0 visits. (Traffic Sources > Campaigns)

But, when I drill into the content section and tell it to show me a breakdown of pageviews by campaign, it correctly give me the number of page views. (Content > Page Content Detail > By Campaign [use drop down list to slice data])

Has anyone else experienced something similar?

Peace,
Brian