TestComplete displays this message if it cannot find a web page needed to update the data stored in a Web Comparison project element. This message is shown after you updated the stored data but the page was not found. In order for TestComplete to be able to update the stored data, the specified web page must be open in your web browser. To resolve the problem, open the page and try to update it again.
See Also
About WebTesting Collection
About Web Comparison Element Editor