Elevator .bik movies don't work
When I was making my level, I added elevators using this tutorial: https://developer.valvesoftware.com/wiki/Elevator_(Portal_2). I don't know why, but I only have black screens after loading my map. Both $arrival_video and $departure_video are set to media/animalking.bik. I tried to use different movies, but it didn't help a bit.
The videosplitter.nut; the script that manages the elevator videos has been changed with the pti update. When you upload the map to the workshop it'll pick a random video for you.
If you really want a specific movie; check out the hardcoded elevator instances by brainstone in the downloads section 
Those instances are great, the only problem I've found with them is that something in the parms of the transition_ents confuses Hammer. It lists some of them twice and some of them with garbage after their names.
Elevator Videos Fixed - Brainstones Hardcoded Instances v1.1
There is an alternate option if you want to choose a specific video for your elevators instead of a random one; you can use the old script video_splitter.nut there is still in the portal 2/portal2/scripts/vscripts folder (take into account that now, the game uses the one into portal 2/portal2_dlc2/scripts/vscripts folder), save it under a different name and making the logic_script entity (that's inside the elevators instances) point to this new script instead. In this thread I explained this trick.
You'll have to pakrat the script into your .bsp, but that's all.
useful tools and stuff here on TWP 
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Really? What exactly is the matter? Which stuff is listed twice and where?
A map pack coming soon. - click for more information
It's kind of bizarre. The title and subtitle parms are listed twice, and the values seem to be linked between them, so changing one will change the other. Their default value is something like "olor 255 255 255", which seems to be somehow "bleeding over" from the title and subtitle colors.