Thanks for the info and of course the great work you guys are doing.

Your Portal Version: v1.0.5
Your phpBB Type: Standard phpBB3
MODs installed: Yes
Your knowledge: Beginner

What have you done before the problem was there?
Installed "Board3 Portal v1.0.5" with success

What have you already tryed to solve the problem?
Search for only "breadcrumbs" but ...