Problem with thirdperson view in demo playback

I tried to follow the teams tutorial on movie making by
using console commands in demo playback.

However when i playback the demo the character i was using is
invisible & only came back into view if i typed the command
for thirdperson view in the console, also the particle &
transformation effects were also missing.

I know this isnt a gameplay bug, but its still annoying that i
cant continue on this little project i've started.

Ok Where Did You Get The Tutorial?

Right here: http://www.esforces.com/~team/tutorial/hlmovie.html