When trying to plug my newly created 'cron.txt' file into crontab I get this error: "cron.txt":2: premature EOF errors in crontab file, can't install.
I tried and it works great! Maybe you created cron file with a windows editor? In Windows, we have CR& LF to go to new line! In Linux, just only one for new line! Double check again and it's better create cron file with nano (I find it's simpler than vi)