Some field data not saving

[lpa]

I have a weird problem. I am using the latest dev-version 2.6.5. I have a few fields that don't update when saving: trying to remove a role from my admin user or change the name of the user, but the changes are not saved even though the change of the admin theme is saved! The same problem with an image field. I have enabled tags in the image field, that nothing in the tags field saves. 

How should I debug this and what could be the reason?

[Peter Knight]

You can turn on debug mode via the config file at /site/config.php

$config->debug = true;

of if you wont want bug messages showing in the front end, you can check /site/assets/logs/ for any messages relating to your problem.

BTW there's also a Module called Config (or something similar) which allows you to toggle debug on/off from the admin instead of having to FTP your config.php file.

[lpa]

Thanks for your reply! I have debug-mode on, but I can't find the reason for this problem there.

I have checked that the image-field with tags has the tags column in the mysql-table. And it is only my own superuser account that is not saving the roles change.

[LostKobrakai]

To make this clear a superuser cannot edit the own roles, if that's the case here. It's a security measurement, so that one cannot lock his/her own user out of the system.

[lpa]

Do you mean, that a superuser can not change any of his roles? 

How about the image-field tags not saving? How to debug that?