Broken Sequences in HL2

I own Half Life 2, from The Orange Box. The game runs good except for one thing. Some events, like the vortigaunt putting the gun on the airboat or the Panels rising from the teleporter at the end do not happen. What can I do to fix this?

Try running a defrag on the GCFs with
Half-life 2> Properties> Local game files> Defragment Game Cache files in your steam “games” tab.
Failing that, reinstall.

Thanks. I took your advice and tested it out and it worked like a charm.

Wow… suggestions from the internet never work. I suppose miracles do happen.

Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.