how to redirect form registration?

how to redirect form registration?
My problem is I need working with 2 users groups and I enable plugins following
-User - Frontend User Access
-User - Profile
-User - Joomla!
-System - Frontend User Access
-System - User Group FTW For Hikashop
-System -HikaShop user synchronization plugin
-System- Redirect Joomla registration to HikaShop Plugin
-HikaShop group plugin

And when I fill completed the form registration and bottom click register, the redirect page is blank
In the checkout page
smartgraphic.org/web/index.php?option=co...ep&step=1&Itemid=367

And Register page

smartgraphic.org/web/index.php?option=co...=register&Itemid=415

I'm tired research in the forum and not found reply my issues

final12 wrote: how to redirect form registration?
My problem is I need working with 2 users groups and I enable plugins following
-User - Frontend User Access
-User - Profile
-User - Joomla!
-System - Frontend User Access
-System - User Group FTW For Hikashop
-System -HikaShop user synchronization plugin
-System- Redirect Joomla registration to HikaShop Plugin
-HikaShop group plugin

And when I fill completed the form registration and bottom click register, the redirect page is blank
In the checkout page
smartgraphic.org/web/index.php?option=co...ep&step=1&Itemid=367

And Register page

smartgraphic.org/web/index.php?option=co...=register&Itemid=415

I'm tired research in the forum and not found reply my issues