Price only in user points

-- url of the page with the problem -- : www.epicgenerator.net/index.php/shop/category/12-free-downloads
-- HikaShop version -- : 2.6.0
-- Error-message(debug-mod must be tuned on) -- : Warning: Division by zero in /data/web/epicgenerator.net/web/administrator/components/com_hikashop/classes/currency.php on line 842

Hi!

I would like to have 2 types of products on my page:
- 1st is the usual with USD and Paypal
- 2nd is in only user points with the Alphauserpoints payment plugin.

My problem is twofold:
- Iif I set it up with any kind of rate, where the price of the point buy product is greater than 1 dollar, it doesn't let my Pay with points. So if I set the point to dollar rate to 1, I cannot buy it with points, but I can pay with paypal.
- I don't want to allow the the users to pay for these products with real money, only with points. So for the products that have their prices set in userpoints I don't want to see Paypal as a payment option.
- Combination of the two is that if I choose a point buy product, and a normal product, i can pay with paypal for both, where the price of the point buy product is under a dollar.

Even if I apply the restrictions in the Paypal payment plugin, to only allow it to pay for dollars, because of the rate, it thinks that the point buy product also has a dollar price, so it can pay.

If I set the rate to 0, I get division by zero errors, and cannot pay neither with points nor with paypal.


So, how do you set up a currency, that is not related to dollar, and cannot be paid for with Paypal?