First thing I'd check is to make sure the report suite ID is correct. If it is, the next thing I'd check is to make sure there aren't any timestamp settings that are messed up. Adobe Analytics is very picky when it comes to timestamp settings. If you have a timestamp report suite and the hits don't have a ts query string parameter, the hit is thrown out. If the report suite is not timestamp-enabled and image requests have a ts query string parameter, the hit is also thrown out.
If you provide us with the URL that you're having trouble with, we can double check that the implementation is working correctly, and I'd even be happy to check and make sure the data is collected in Analytics.
