Hi,
is there a hook that ties into  the player GUI when an Item turns red during invalid placement ?
Is there any way to override, the prevented placement so that an item can be placed?

and yes i know about "build.cs" , but that requires completly building its own GUI. & routines for item selection.

No. AFAIK, both of those things are handled client-side.

Thanks.. .
Which is why eveyone writes their own GUI....

Looks like I will Just have to use the  typey thing....