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The Beginning - Part 1

Cube buttons can be on walls for the cubes to stick.

Not those neurotoxin screens either, those are only for GLaDOS's Lair, and Wheatley's Lair.

The light bridge isn't in the first destroyed portal 1 chambers.

The cube buttons is also magnetic in this map, so the cube buttons should be on ceilings, or walls.

Yes this is the last solution.. thanks for your answers
In all case congratulation for your work ! Many people prefer AT to TWTM, but they don't know the real work which asks making TWTM instances; the idea itself is genuine

Oh yeah. You actually can't launch it while in hammer. You have to close hammer, launch twtm and then run your map with the console.

I solved some problems myself:
-You precised to lauch TWTM.exe in "build program" but the application is named.. portal2.exe
-Instance bugs was from my computer, sorry

So, the only problem now is that TWTM can't be launched from hammer editor, and i can't understand why (google didn't help me)

Maybe this red line ?
Invalid game "C: \Program Files (x86) \ Steam\steamapps\common\Thinking With Time Machine\portal2" found in VPROJECT environnement variable, ignoring.

Oh I see... Well it was a long while ago, when I made twtm maps with the hammer editor. But I remeber switching out the import and export paths for the hammer files somewhere in the options / settings menu. Then It'll automatically import all the props and textures and stuff from the actual twtm folders. Maybe Google on that topic? sorry for the lack of knowledge :/

I saw you page and read comments but it's about Puzzlemaker, not hammer, and i don't see solutions for my 2 problems
I precise i'm familiar with hammer

@kwinten: Please have a look into the official TWTM forums. On this page you'll find all information to make your own twtm maps!