[TYPO3] sr_feuser_register edit does not get saved to database

[Robert Markula]

Hi folks,
It's sr_feuser_register again.

When a FE user goes to the page to edit his profile, changes some fields 
and clicks on 'Update profile now!', the changes are neither reflected 
on the preview page nor in the database.
This means a user can't change anything since all changes are lost.

Did somebody experience the same with sr_feuser_register 2.5.6 and Typo3 
4.1.1?

Cheers,
Ro