cannot add product

Hi
I cannot add product to the shop - i get this code - seems to want to put it in the header?

Notice: Undefined index: product_option_value in /homepages/27/d235878363/htdocs/shop/admin/model/catalog/product.php on line 161Warning: Invalid argument supplied for foreach() in /homepages/27/d235878363/htdocs/shop/admin/model/catalog/product.php on line 161Warning: Cannot modify header information - headers already sent by (output started at /homepages/27/d235878363/htdocs/shop/admin/index.php:75) in /homepages/27/d235878363/htdocs/shop/system/engine/controller.php on line 28Warning: Cannot modify header information - headers already sent by (output started at /homepages/27/d235878363/htdocs/shop/admin/index.php:75) in /homepages/27/d235878363/htdocs/shop/system/engine/controller.php on line 29

any help?

Have you installed any plugins or made any changes?

have reinstalled as thought it was best - ok lost 2 days work but this is a learning process - worth it - and working now - where do i find the solved button so this topiccan be closed?

ok all reinstalled and have added portuguese language pack - and i get this when i add a product - this is the 3rd time in 3 days i have to start from scratch - am going to delete all reinstall again but if this happens a 4th time does anyone have an idea why?


Notice: Undefined index: product_option_value in /homepages/27/d235878363/htdocs/shop/admin/model/catalog/product.php on line 161Warning: Invalid argument supplied for foreach() in /homepages/27/d235878363/htdocs/shop/admin/model/catalog/product.php on line 161Warning: Cannot modify header information - headers already sent by (output started at /homepages/27/d235878363/htdocs/shop/admin/index.php:75) in /homepages/27/d235878363/htdocs/shop/system/engine/controller.php on line 28Warning: Cannot modify header information - headers already sent by (output started at /homepages/27/d235878363/htdocs/shop/admin/index.php:75) in /homepages/27/d235878363/htdocs/shop/system/engine/controller.php on line 29

The "Cannot modify header information - headers already sent" means that you have white spaces in the files of your additional language.

check admin\language\portuguese\portuguese.php and admin\language\portuguese\catalog\product.php and make sure that there is nothing behind the ?>
Not even "white" spaces.

Hi have checked both and nothing after the statements, but seems to be working now after last reinstall, well no crashes for the last 12 hrs am feeling positive
thanks