[TYPO3] sr_feuser_register: Editing not working when using formFields Constant

[Peter Huppertz]

Dear List,

I'm using sr_feuser_register to allow users to update their personal 
data. The extension is working fine when used with the standard-fields. 
But as soon as I use the constant formFields to define my personal set 
of fields it displays the desired fields but it stops saving changes. 
When pressing "save data" the edit-form is displayed again. When used 
without the formFields constant the confirmation page is shown and the 
data is saved.

Thanks for help

Peter