Can someone tell me what this object in the HLMV is telling me? Sometimes I see it and other times not, depending on the current game I have set for the SDK.

The picture on the left was taken with the viewer set to Half-Life 2 and the one on the right was for Day of Defeat:Source.

I would guess you accidentally have a weapon model loaded for the model. You need to unload it from the file menu.

I think it's the Kar98 as in the first pic I can see the corner of the error model because it's not available in HL2 and in the second, it's loading but not attaching it because the corpse has no matching bones to merge to.

I knew you'd have the answer, Jed!

Takk