I have done some modicifations to the standard code, but in some way, Something is going wrong. On the productinfo page, none of the buttons are raising an event, but are just refreshing the page. For example, the button add to cartin the ProductVariantsInGrid.ascx, when it is being pushed, it does not raise the rptVariants_OnItemCommand event, but instead, the page is refreshed, reloading the repeater again.
I someone has a clue, a hint, or better the solution :-) let me know!