[TYPO3-shop] Undefined function: setrequiredfieldarray()

[Michel]

I updated to the latest version and now I get the following error:

Fatal error: Call to undefined function:     in 
/home/realdata/public_html/typo3/ext/tt_products/lib/class.tx_ttproducts_product.php 
on line 66

Please help!

regards,
Michel