If you have upgraded your ArchiCAD STAR(T) version eg 2009 to 2011 and are opening your old version files make sure you migrate your Libraries. A Library Loading Report should prompt you to check your Library Manager
If the Library Loading Report didn’t pop up the you can open the Library Manager from File > Libraries and Objects > Library Manager
In the Library Manager the Consolidate Libraries button will be active (a warning logo) click this button and it will describe the process and ask you to consolidate your Libraries
Now you will have the correct Library for the version you are working in and any necessary migration Libraries.