Under unusual circumstances ColdFusion MX 7 server may cache a File Not Found (404 Status Code) error for a template and continue to return the error even when the expected template file resides in the proper location.

For a short reproducible case, create page hello.cfm with the text Hello and browse it. You'll see the page successfully completes. Rename the file to anything else, perhaps hello2.cfm, and browse to the original page hello.cfm again. Assuming that the CF Administrator setting for Missing Template Handler is not configured, you will receive a File Not Found error like this: