sorry, but this is not an solution. there a tousand of applications which can autoresize a picture - but I need it in XOOPS 2.0.x - and the yogurt modul is not a solution. but thanks for the answer.

How can I add extra fields in the user profiles (without using smartprofiles)?

Second question: if I use smartprofiles - how can I combine smartprofiles fields with the core user registration form?

Is there a hack to autoresize the avatar when i upload it (with f.ex. imagmagick)?

ok. I've solve the problem.
i am running XOOPS 2.0.18 with apache2 and php5.

the problem is, that when you modify the settings then the file /cache/adminmenu.php will be deleted and normaly a new one should be created. the second stage doensn't work onmy installation - so the folder /cache is empty (and 0777).

the solution ist to backup before the file adminmenu.php. after you modify the settings and become the blank opage upload the backuped file adminmenu.php and SET THIS FILE ON 0777. now you can go into the administration and you should now update the system module (go on modules/update system module). after that give adminmenu.php normal permission (0644).

I know that this is a really strange procedure evertime when you change someting you should do that - but on my installation it works.

Write if it also works on your installation.