Vanished template items after edit on vbulletin 3.7

[mixer66]

Upgraded my my forum to 3.7 beta 2 and i had to reverse some template items to see the new features.
By editing the header template ( wanted the header be in the center ) i notice that after saving the header template. The header template wasn't anymore in the list. I need to do more adjustments and wondering what might be wrong on my configuration. Please can somebody help me with this ?

[Floris]

Does your forum run in debug mode?

[mixer66]

Where can i find this debug mode ?

I assume you mean the debug mode inside the config.php . I checked and there is no line with debug mode in the config.php.

So it should be something else. Any suggestion ?

[Floris]

I was asking, because if you were then perhaps you clicked revert in the master style which deletes the template. You sound like you aren't running in debug mode. So perhaps it's something else.

Make sure you are running all the default files from vB 3.7, and do not have any customizations or unofficial addons installed.

[Colin F]

You can also try running /install/finalupgrade.php again, that'll reimport the default style.

[mixer66]

Running /install/finalupgreade.php didn't do the job. But I found the problem. In the template table the templatetype of each vanished template is not set. Once I set it to 'template' using phpMyAdmin, I can edit it again and it stays there.
Any idea why it's set to NULL the first time?