I think if you'd titled this something like "KA 72 load problem" then Dylan would be more likely to notice it and come back with a solution.

Dylan72 said..
The message seems to be saying to me that the file you're uploading is invalid in some way.

Can you send me a copy of the GPS file to [email protected] and I'll take a look at it.

Dylan.

I have the same problem

Your file header is not in the right format, so the application is choking.

Looks like a very early firmware perhaps. Have you ever updated the firmware?

A normal SBN file contains some header information like this:
USERNAME,1000666,1,V1.62(B1115)

This is the username, the device serial number, the time interval (in seconds) and the firmware version.

Your file headers look like this:
JOCK CALVERT 1003021 (1s)

There are no commas, no firmware version, and the interval is in text, not just a number. ka72.com can't interpret what it's seeing in the header.

I guess someone who has been around GT-11s longer than me could confirm that this is how they originally did their thing?

I've updated ka72.com to cope better with these files.

You should really still update your firmware. That GPS must have been on a shelf somewhere since 2007!