How to make list of products on the menu

-- url of the page with the problem -- : prostolb.com/lighting-console
-- HikaShop version -- : 2.3.4
-- Joomla version -- : 3.3.6
-- PHP version -- : 5.3.29
-- Error-message(debug-mod must be tuned on) -- : Hi. I want to make a list of products from a category "Консоли осветительные". When I choose a category, it is not saved. Associated category remains the 2 product category. I do not know what to do.
screen
1. take.ms/MBe5B
2. take.ms/zcVBL
3. take.ms/svpcv
After saving, selected category is reset.
take.ms/ZCLlR

Click on the plus also does not work.
take.ms/kCWIj

How can I make list of products from the category on the menu?

I have all turned out. It works correctly in Mozilla, but does not work in Chrome browser

Hello,
I just tested it on my end and it worked fine :
- Active the Joomla debug mode ("Administration->Global configuration->System->Debug System/Language")
- Set the "error reporting" option of the Joomla configuration to "maximum"
- Test it again so that we can see if it display an error message which will help us to understand from what your issue is coming.

Today I tried to do it in the browser Chrome, it works. Error no longer exists. I do not know why it worked, but it works.
Thanks you!