Problem adding a second price to a variant

-- HikaShop version -- : 2.6.1
-- Joomla version -- : 3.4.8
-- PHP version -- : 5.5
-- Browser(s) name and version -- : Chrome last
-- Error-message(debug-mod must be tuned on) -- : no error

Hello, I have a problem with the variants.
I have correctly configured the variant for a product and I can correctly see the selector in the product page so everything seems to be ok but... the problem comes from the fact that I have 2 different currencies and when I add a second price to a variant this simply is not saved and when the ajax icon stop to spin the value come back as before deleting my last addiction hence the second price is not saved.

Moreover sometime even the main price it is saved but many times it is not, some time happen even the the added currency is not available on the currency selector but it is present only in the first selector, not in the second... the behavior is very strange, I have just 2 products but I cannot add any price for the variants... or better I can set the price sometime but just for one currency not for both.

I have the starter edition, is maybe this the problem?

Hi,I have found the solution, I post it here maybe it could be useful to someone with the same problem, well the variant section will not work until you use the editor ArkEditor (CKEDITOR) as I did, now I switched back to the default Tiny mice editor and the issue disappeared.

I don't know if the problem is generated by Hikashop or ArkEditor (CKEDITOR) but the problem was fixable only removing ArkEditor and using tiny mice.

Edit:
I want just to add that the problem is caused of an Javascript error:
Uncaught SyntaxError: Unexpected token } on line 141 of the file hikashop.js inside media/com_hikashop/js