Scripts in cron.hourly folder not working

Whatever script i put in /etc/cron.hourly folder, or other cron folders, they are not working, and when i test the scripts i get this:

Code:run-parts --test /etc/cron.hourly/test
run-parts: failed to open directory /etc/cron.hourly/test: Not a directoryThe scripts are executable and don't have extensions in the end.

Any idea what is the problem?