Hi, it's me almost two years lates. Thanks for the replies. If someone has the same problem, the fix was not using the flatpak version of steam. Don't know why but caused me some problems. With the .deb version of steam it runs perfectly.

Hi, i'm running the game in linux and i'm launching the Livesplit by adding the "start livesplit/LiveSplit.exe" command in the portal.bat file. It works sometimes. Like, sometimes I open portal and it runs well but sometines I start it a hundred times and always crashes. The portal app works well, but the Livesplit dont.

I tried restarting steam, changing the proton version and restarting the pc. None is consistent.

Does anyone else has this problem? Or someone knows how to fix it? Thanks