No payment modules cannot be updated

[DrByte]

This is where I'd start: http://www.zen-cart.com/wiki/index.p...Obscure_Issues

[ez1975]

Thanks, there was a huge amount changes..but I have now noticed, that anything else in admin can be modified/updated except modules (shipping, payment or order-total). The changed values won't be saved.

I already replaced modules.php -file in admin and now i'm wondering is there any other file or something which affects only to module updating?

[DrByte]

Your symptoms are strangely similar to those indicative of having outdated file contents for files in at least your /admin/includes/functions/ and /admin/includes/init_includes/ folders.
But, to be perfectly honest, cherrypicking which ones to check is a shortcut that will just bite you in the end.

[ez1975]

Now I find a another weird thing: even I uploaded and installed the latest version of Zen, server information in admin shows that zen cart is 1.3.8a and database is 1.3.9h..maybe the problem is caused by that?

[Ajeh]

Most likely ... you have not upgraded the database to v1.3.9 ...

Without that, all kinds of strange things will happen ...

I would make sure the database is upgraded and then recheck your site to make sure all of the files are upgraded as well ...