The build modifier did not walk the ID link of the object in the settings. This meant that the pointer was just pointing to random memory after loading a file that had this object set. The fix makes sure this ID link is handled in `foreach_ID_link`.
The build modifier did not walk the ID link of the object in the settings. This meant that the pointer was just pointing to random memory after loading a file that had this object set. The fix makes sure this ID link is handled in `foreach_ID_link`.