ianwrightphotos on "[Plugin: WooCommerce - excelling eCommerce] Warning: array_merge() [function.array-merge]: Argument #1 is not an array in"

XXXXXXXXXXXXXXXXX\wp-includes\post.php on line 2996
{"result":"success","redirect":"https:\/\/www.paypal.com\/webscr?cmd=_cart&business=XXXXXXXXX&no_note=1¤cy_code=EUR&charset=UTF-8&rm=1&upload=1&return=http%3A%2F%XXXXXXXXXXXXXXXXXXXX%2Fcheckout%2Forder-received%2F%3Futm_nooverride%3D1&cancel_return=http%3A%2F%2FXXXXXXXXXXXXXXXXXXXXXXXXXXX%2F%3Fcancel_order%3Dtrue%26_n%3D4b5201b08a&page_style=&invoice=WC-¬ify_url=http%3A%2F%2FXXXXXXXXXXXXXXXXXXXXXXXXX%2F%3FpaypalListener%3Dpaypal_standard_IPN&address_override=0&no_shipping=0&tax_cart=0.00"}

I am getting this error when I try to pay using paypal. Theme is also from Woothemes. Any ideas please?

Thanks

http://wordpress.org/extend/plugins/woocommerce/