But Does It work?

Congratulations to Stuii for pointing out that crond does not necessarily inherit the same path as my shell does and therefore it is necessary to use the full path to the program you wish to run. It has fixed the original issue, but now it refuses to make an outward connection to nic-nac-project.de - I can only assume that it isn't using the proxy server, so I am currently hacking that into my script and then, hopefully, the whole lot will run automatically.

When this message propogates to the UWA server it is safe to assume it works!