Denver Research

Were any files uploaded?
If yes, then it could be it timed out?
If no, then it must be username, password, base address, port, etc.. Or, make sure the POS.exe has permission to access the internet on your computer.  Does you server allow ftp's?  Try doing an ftp in something else.

The reports are not sent to a persons email account?

It is most likely the server settings.  This features requires you understand how your server works and have permission to read/write files to it.

 have not used before, this is first time

Have you been using it or was this the first time?
It would be because it didn't have or lost internet access.  it could be the server timed out, your firewall/security software stopped it, the setting.