Error after posting new Ad - preg_match(): Compilation failed: missing

[jonnysupersonic]

Hi Forum

I am using OsClass 3.5.7 and after a logged in user posts an ad, this is the error on screen.

Where is it coming from and how do i fix it?

Warning: preg_match(): Compilation failed: missing ) at offset 147 in /home/vottlegj/public_html/oc-includes/osclass/helpers/hSecurity.php on line 204

Warning: Cannot modify header information - headers already sent by (output started at /home/vottlegj/public_html/oc-includes/osclass/utils.php:1740) in /home/vottlegj/public_html/oc-includes/osclass/utils.php on line 1745