Thanks Jason
I just did that and got the following error message:
Warning: Cannot modify header information - headers already sent by (output started at C:\xampp\htdocs\W3DC\test1.php:5) in C:\xampp\htdocs\W3DC\webassist\form_validations\wavt_scripts_php.php on line 83
Strangely it worked all before I reinstalled CSS Form Builder 201, FormTK100 and Security Assist 205.
The error just ocures when I use the Validation Show if behaviour