[Forum] PHP Warning: Illegal string offset 'userid' in ..../includes/class_core.php(4730) : eval()'d code on line 7

[gnrx]

Hi.
When click in any user for view her profile, appears this error:

PHP Warning: Illegal string offset 'userid' in ..../includes/class_core.php(4730) : eval()'d code on line 7

How I can solved this?

Regards