[TYPO3-commerce] Save Articles Error mysql_real_escape_string()

[lists.netfielders.de.]

Dear List,

when im trying save a new product i get the following
warning:

Warning: mysql_real_escape_string() expects parameter 1 to be string, 
array given in /html/t3lib/class.t3lib_db.php on line 568


568 function fullQuoteStr($str, $table){
return '\''.mysql_real_escape_string($str, $this->link).'\'';
}

What would be an good workaround for this issue? I think to hide the 
warnings isnt the best way to solve this problem.

Many thanks in advantage,

Chris