Parts from EAGLE libraries

For the purpose of demonstrating and not moving around my whole PCB project in the public I wanted to create a new empty project (named “debug” in LibrePCB and copy/paste a e.g. mounting hole symbol over from the imported EAGLE schematics into the new empty “debug” schematics.

I was able to drop it into “debug”. But trying to build a .brd from it fails. It say I had to install an appropraite library. So I went through the steps of importing an EAGLE 7.7.0 library, holes.lbr in this case. It checked everything on the import and it went smooth.

But now, when I try to create the board, I’m getting the “Place Devices” dialog. Clicking on it, it still says this: