...view the Categories tree - on side ??

how to display the tree on the side of frontend. (in your demo there is "categories of product")

By creating a category listing module as explained here:
www.hikashop.com/en/support/documentatio...ml#categories_module

doesn't work. I don't see the tree, with only the menu, but I see all the categoriess with images, displayed in the side module.
in addition to the field: "Only display categories with products"
I set "NO" but I see again the pictures

Please make sure that you configure it the same way as the module on our demo website :
www.demo.hikashop.com/administrator/inde...odules&task=edit&cid []=120

On side, is displayed all the categories, but when I select one of this, open other pages and not those of the products.
Maybe is better to use third components

What other page ?
If you don't give information on what you do, we can't help you.
Could you give a link to that page ? Could you do a screenshot of the options of your module ?

frontend
i48.tinypic.com/28vzvis.jpg

my setting
i45.tinypic.com/108b4vb.png

Mmm. It's still vague as we don't know what happen when you click on a link. What is the link ? What does it display ?
I would guess that it might come from the "menu" option of the module. Sometimes, depending on your joomla/server you might have to create yourself a categories/products listing menu and set it in that option once the menu works instead of using the one created automatically.

I must be missing something as when I have created categories as per the demo, when I go to menu - hikashop options and select associated category it will not except the category once saved and reverts to 2 product category any ideas?

The value will only be changed on the options of the menu/module once you click on the "save" button of the menu/module options screen.

Also, it is quite rare but it can potentially come from a browser user session issue so you might want to try with another browser just to make sure that it's not that.