Took a copy of my fully working site to my laptop

-- url of the page with the problem -- : localhost
-- HikaShop version -- : 2.3.1
-- Joomla version -- : 3.3.1
-- PHP version -- : 5.5.15
-- Browser(s) name and version -- : MOZILLA FF 33.0.3
-- Error-message(debug-mod must be tuned on) -- : Notice: unserialize(): Error at offset 89 of 257 bytes in D:\xampp\htdocs\lumen\lumen_prj\administrator\components\com_hikashop\classes\field.php on line 283

When I run the local version of the site on my xampp Apache and MYSQL servers all looks fine first, but when
I try to checkout when the address form pops up, and also in other areas of the site ,such as the page where all the products are displayed I see strange code that shouldn't appear there, it begins with this error:

Notice: unserialize(): Error at offset 89 of 257 bytes in D:\xampp\htdocs\lumen\lumen_prj\administrator\components\com_hikashop\classes\field.php on line 283

Thank you
I turned error reporting off in configuration.php it first said 'default' so I make it 'off'
Now everything seems to be fine.