Help with editing MySQL database

[at0mic]

I've got website running happily using XAMPP 1.4.15

 

However, I desperately want to upgrade to the latest XAMP 1.6.1

 

The problem I'm having after the upgrade is with a php page that lets me edit users. I can add users ok but if I try to edit them, all the cells in that row end up empty. There's no error message which makes it difficult to diagnose.

 

At first, I thought the reason was due to the new XAMPP having MySQL 5.0.37. I upgraded XAMPP 1.4.15 to MySQL 5.0.37 and it still worked perfectly. There's something in XAMP 1.6.1 which isn't compatible with my php code. I even tried  XAMP 1.6.1 with PHP 4.4.6 but I still had the same problem.

 

Please help

 

I've attached the PHP code + MySQL database in case anyone would be so kind as to take a look at it.

 

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