[TYPO3-dev] Cronjob - No backend user named "_cli_username" was found!

[Brian Bendtsen]

Hi

Im trying to set up a cronjob for an extension aux_newsmailer and like 
with other extensions you need to create a backend user named something 
like: _cli_username or the script wont run.

The script Im trying to execute returns this error:

No backend user named "_cli_<username>" was found! [database: mydatabase]

But im 100% sure that the backend user exist - could it be some kind of 
permission issue on the server?

I have succesfully installed the extension and set up the cronjob with 
success on another server.

/Brian