Your best mapping gotchas/errors
Naahhh always remember to check the orientation 
Giving the player a portalgun in a rotating portalgun map.
http://steamcommunity.com/sharedfiles/filedetails/?id=204748296
Conversely, NOT giving the player a portalgun and relying on the sp_ prefix, then uploading it to the Workshop.
All I ever wanted was to make music play from a cube ;_;
The text in the top left is "Performance Warning: Large friction system (54 objects)"
Oh, this happened when I uploaded Mevious' Height 1.1 to the workshop. That's why it has a million change notes, I was so confused as to why I wouldn't spawn with a portal gun. Luckily I patched it before anyone played it. 
The text in the top left is "Performance Warning: Large friction system (54 objects)"
Maybe you can just use the instance from the downloads section? It's for PTI though.
unintentional easter egg in an early build of my iris mod:
https://www.youtube.com/watch?v=lkeOkmzkkyk
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Im blue, a Clean Christian Furry with Autism.
What the hell? I never thought that was possible or thought of it. I think you should keep it? Unless it has to do with the console... Well, we finally have someone to decrypt the console gibberish.
New console commands to be added:
"Well"
"Then"
"XD"
"Lolwut"
That together with the keyvalues.
Alright, always remember to check how new portal devices work before actually making an entire map for it.
http://steamcommunity.com/sharedfiles/f ... =218870714
it's just what happens when you use the playmovie command in extras.txt.
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Im blue, a Clean Christian Furry with Autism.