Old demo question.

I've got some fossil demos from early 2005 I can't get to work. I tried Pincus's launcher but it didn't seem to work. The zip I dl'ed from here didn't say anything about the .dll files included. Am I to replace my current client/server .dll files w/ these ones? Or are these demos never to be seen again cause of oldness

Oh and it says this in console when it's trying to load:

Playing demo from ratsvs$w.dem.
Team Deathmatch
Map: dm_roaches2
Players: 6 / 14
Build 2313
Server Number 99
No pure server whitelist. sv_pure = 0
CAsyncWavDataCache: 1 .wavs total 0 bytes, 0.00 % of capacity
Begin loading faces (loads materials)
End loading faces (loads materials)
Initializing renderer...
Host_EndGame: DataTable_ParseClassInfosFromBuffer: invalid class index (16384).
--- Missing Vgui material vgui/resource/icon_newfolder

05 would be old old, on the demo loader, did the demo's ever work? There was a time where the demo's didn't work at all in that time period..

Not certain if I ever watched them again. Definately not recently. Yeah I tried old old and got the same error as old and current. The demos were created 4/08/2005.