Do you load Kira from a .cr2 file? If you're comfortable opening up .cr2 files, you might want to look at the file references and see if there's a call to the D drive. I've seen it happen before, it's annoying. You can change the absolute reference with a relative reference and fix the issue, if that is the problem. I'm not sure why the missing collarbone would happen. Since Kira (older) is based on Vicki, you might want to nuke the .rsr file that is in the Geometries[something] folder, next to the vicki .obj file. If it gets corrupted, weird things happen. I don't know why only the Kira character would cause this to happen, but killing the .rsr is a first step for me when stupidities occur. Hope it helps!