Bonus grenades/trails not working in deathrun maps

[Jerpy]

I don't know why this problem never occured to me, and I never had focused on it. I feel dumb for posting this now, because apparently this has been a problem for a while but nobody had said anything.
Recently I noticed the bug/problem, and over time figured out exactly what they are but it still didn't answer as to why they are not working.

For example, the bonus trails in atomic warfare show up on various parts of the map above specific traps. These you can grab, and they show up as a "grenade" but you can't throw it or anything.

No player is able to pick these up, regardless of whether or not they have all their games mounted.
We can all see it, but nobody can pick it up.
I figured it was a mounting issue server-side, but then I thought that made no sense because we have both CS:S and TF2 mounted on the server, and these are CS:S grenades, so why would they not be able to pick them up?

Any helpful responses appreciated, thanks.

[c👌de_g🎷]

Do you have SWEPs for these weapons? You need weapon files for them to be pick-upable.

[Pfctink]

[QUOTE=code_gs;48183603]Do you have SWEPs for these weapons? You need weapon files for them to be pick-upable.[/QUOTE]

Which files are these commonly?

Edit:
It's CS:S weapons, but the trails still do not work.

Edit 2:
Make sure the grenade names are weapon_flashbang, weapon_smokegrenade, and weapon_hegrenade

(Thanks Code_gs)