Hi Kobra

Thanks for taking the time to reply.

Yes, you are correct in that the upload was from the local server and the config files changed. I tested the local server with a fresh install of Z1.3.1 and got the same login issues when creating an account without any mods installed. This is on an Apache/XP Wamp.

So I dumped the original admin files from the default ZC install up to the Unix Box - and trashed the admin section totally. I think this is something to do with the Admin Profiles mod.

So now I am creating a default Zencart install in a local directory ready for upload. Then I am creating upload folders for each mod (e.g. the templates and language files etc), then I am uploading one by one until everything is online in a fresh directory.

The email_functions.php has not been modified as far as I can remember but you may be right - there is most likely something arguing with another file somewhere.

Ho Hum - looks like a long night. At least I will be able to isolate the problem (hopefully) LOL