HLMV just won't show my model

[Netheous]

So I made a sword SWEP and it worked flawlessly in game - but in HLMV it looks like this:
[t]http://puu.sh/qdQ3P/e347b9755c.png[/t]

I don't know what could the issue be, it doesn't want to load any other models either (they are invisible)

Any tips?

[Busterdash]

HLMV can't find the material for this model and if other models dun' goofed, then perhaps you need to start hlmv.exe with the -game flag using your command prompt. Unless this is already what you're doing.