Redirected to Admin home when I press Save

Hi,

I had been having problems with categoriy meta tags on version 1.3.7, which I've now fixed using this advice: http://www.zen-cart.com/forum/showpost.php?p=371654&postcount=15

However, when I hit "Save" after editing any category meta tags, the change IS NOT saved and I'm redirected to the admin homepage.

I'm working on this for a client. Other changes i make do save fine.

Anyone any ideas or advice on what could be causing this redirect and non save?

Thanks

I had been having problems with categoriy meta tags on version 1.3.7
Nobody here still has a 1.3.7 loaded or active
UpGrade!!

Thanks for the helpful input ...

It's a client site who I've only just started working for. Upgrading right now isn't an option. There seems to have been quite a lot of customisation in the past, so before we upgrade we need to establish what all those customisations were so that we don't override them.

There have been a number of items needing fixed, which is a far higher priority right now than upgrading.

There seems to have been quite a lot of customisation in the past
As this is an admin function - - reloading those files would be an option BUT only after you have performed a compare of all of them to the default set owing to possible customizatons