0-an error has occurred

Hi
I am trying to install HikaShop on localhost, just updated to Joomla 3.1.1, and it won't work. I get this error:

SQL=UPDATE `j25_menu` SET `rgt`=`rgt`-0 WHERE `rgt`>=

I tried the "usual" way through extension manager, and then I tried making a folder in tmp etc, with same result.

I've discovered that somethings are innstalled, database tables, menu and obtion to choose modules, but the component isn't there?

What to do?

Hi,

I must say that I've never seen that error.
It is apparently related to the menu items of the backend. Could you try to click on the "rebuild" button of the joomla menu manager and then try to install again HikaShop. Do you get the same problem ? Can you also make sure that you're using the latest version of HikaShop (2.1.3) ?