Hi Francisco,
The log.php does not give me an error on this case.
A friend of my have installed feng office on his local machine and that worked fine.
Also he imported my database, and on his machine my database runs fine without the problem (all is saved well).
Do you have any other ideas? I have tried several webhostings and with all I bump into the same user permission problem.
Can this be reported as a bug?
2d problem (less important to me) that only excists on a hosted server is the groups.
I have added a group, but I am unable to edit the group (it gives a error 500 Internal server error)
Again when doing this on a local installation everything works fine also after importing my database.
This problem generated a log file in the log.php
Session "default" started at 2014-03-18T08:52:57+0000
#1 ERROR: Error: Missing argument 3 for save_user_permissions_background(), called in /home/timprodu/public_html/crm/application/controllers/GroupController.class.php on line 99 and defined in '/home/timprodu/public_html/crm/application/helpers/permissions.php' on line 1207 (error code: 2)
#2 ERROR: Error: Undefined variable: is_guest in '/home/timprodu/public_html/crm/application/helpers/permissions.php' on line 1268 (error code:

Time since start: 0.45739316940308 seconds
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(sorry, i was not authorised to apply the code tag)