Error proxy not found

[Stratisphere]

Heya all,

Great news it's finally out

Anyway, in the middle of setting up a server, and got this wonderful message...

Error: Material "models/flag/flag_blue" : proxy "EntitySpeed" not found!
Error: Material "models/flag/flag_blue" : proxy "Sine" not found!
Error: Material "models/flag/flag_blue" : proxy "Add" not found!
Error: Material "models/flag/flag_red" : proxy "EntitySpeed" not found!
Error: Material "models/flag/flag_red" : proxy "Sine" not found!
Error: Material "models/flag/flag_red" : proxy "Add" not found!
Error: Material "models/flag/flag_yellow" : proxy "EntitySpeed" not found!
Error: Material "models/flag/flag_yellow" : proxy "Sine" not found!
Error: Material "models/flag/flag_yellow" : proxy "Add" not found!
Error: Material "models/flag/flag_green" : proxy "EntitySpeed" not found!
Error: Material "models/flag/flag_green" : proxy "Sine" not found!
Error: Material "models/flag/flag_green" : proxy "Add" not found!

plus many more. Basically i installed hlds and done it with the normal hl2mp, then copied the FortressForever folder in to the root directory (of the installation) and ran it with a start line something like this:
./srcds_run -console -game FortressForever +map ff_crossover -maxplayers 20 -autoupdate

So it starts, dumps a pile of errors like above, but doesnt error out.

... No luck. Any advice?

(P.s. all standard configs, just wanted to get it quickly running. Will tweak after but so far it aint running!)