TF2 & portal addons not working

When i first started playing Gmod, i wanted to find TF2 and spawn the heavy (hell yeah i would XD) but it just didnt spawned, no matter where i wanted him or how many times i MASHED the button it just wouldnt spawn, same thing with portal and other military addons it came with. Only several Props worked from its extra addons. Anyone know the solution? :frowning: