I hate Soundscripts but I love them
Your computer hates you. Try the other way to set the game directory through the executable (follow this page https://developer.valvesoftware.com/wik ... _directory )
OR use the -game command to set the current directory.
EDIT: Did you even check if it compiled?
EDIT2: put a -d 0 in it like the console suggested. Problem solved
ya i didn't have a clue where to plug in the -d 0 was the thing. so i just randomly put it places until I put it at the end of the command prompt. It seemed to work. Thanks for your help.
Edit
I also found another typo of yours. You said to name the files closedcaption_... when they need to be called closecaption_...
Mapping Since May 21, 2011
Nonsense... the wiki didn't say that 
To bring this thread back from the dead: I have the very same problem like baca.
Everything is exactly the same, apart from the fact that you can switch "closecaption_Castle" with "closecaption_tAA_english".
The problem is: under Steam/username I don't have a folder named sourcesdk. I never installed any different sdk game than Portal. I can't change the active mod. It should always be Portal. Still, captioncompiling does not work.
EDIT I've messed around a bit: It seems that (apart from the file called gameConfig.txt) inside portal 2/portal2 is a file called gameinfo.txt. If I just copy it and paste it into portal 2/bin (No idea what I am doing), I will at least get a different error, which looks a bit more progressive:
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Looks like it cant find closecaption_taa_english.txt. Is it in your resource folder? (Same name)
Victory!
After I have tipped 50 times the same command with different constellations, e.g. moving certain files to dlc2, copying gameInfo from Portal 2, from Portaal 2 dlc or trying something with the -game parameter, I finally did it the following way:
1. Copied GameInfo.txt from Portal 2/portal2 into Portal 2/bin
2. Created a new folder: Portal 2/bin/resource and put my desired closecaption_tAA_english.txt as the only file into it.
3. Giving the common command to the console (captioncompiler.exe -v closecaption_tAA_english)
4. Screenshot attached for future problems of the same kind.
A map pack coming soon. - click for more information