Serious Adwords issue

Hi guys,

Got a real problem here. I have a website that is using Google Adwords.

In their Adwords ad, the display URL and the destination URL are the same (i.e. the customers actual URL).

When visitors click on the ad, Google adds some code to the end (obviously so it can apply cost data to the click):

http://www.clientsurl.com.au/?gclid=COjbwr2qz6MCFQipbwodxyOy9g

And when it gets to my site, it now comes up "Record Not Found" from the CMS. Any fixes for this?

Thanks in advance!