Cannot delete stock_status

Hi.

I'm use 1.1.8 version of open cart and i'm testing it in local mode with xampp installed on my computer.

I've created the italian language by copying the original english file and modify its.
All right, but now i've a problem with stock status.

When i add a new product i can select the stock_status, created in my language.
But In the shop the stock_status for the product is always write "In stock".

Then i think that problem are the stock_status added in my language and i try delete some by the control panel.
Unfortunately, when i try delete any stock status i received this error from my browser:

Fatal error: Call to undefined method ModelCatalogProduct::getTotalByStockStatusId() in C:\xampp\htdocs\admin\controller\localisation\stock_status.php on line 346

Then i can add stock_status but nothing deleted.
Can i resolve it?

Thank you very much for the support...

I will release another version with this fix in.

ok, isn't there any temporary solution for this problem?

Or do you know the cause of this?
sorry for my question, but i very trust in this cms, and i don't want change way....

Ok Daniel...
I don't understand any of PHP language...
But I've fixed this simply error!

The error was only on the writting function validateDelete of admin\controller\localisation\stock_status.php who call an product.php function :

then to fix this error, change "getTotalByStockStatusId" to "getTotalProductsByStockStatusId"

Also the error_name is incorrect.

to fix this you need to correct in the same file, "get('error_stock')" to "get('error_product')".

or change on the ralative language file, "$_['error_product']" to "$_['error_stock']"

bye!

getTotalByStockStatusId should be getTotalProductsByStockStatusId

There is another error that I found and corrected:

in the shop, the product display page is not showing the correct stock_status (availability).

There is always the words "In Stock"...

in order to fix this, you must open "catalog\controller\product\product.php" and change the code
to