Hey there ! I've recently tried to install Source Unpack, but when I try to open Portal.bat there's an error that says "CFileSystem_Steam::Init() failed: failed to find steam interface" and when I extracted the zip file, I made sure it was in my documents, or in a folder on my desktop, and not in the steam library or in a system folder... I do own Portal, tried with the game installed and uninstalled (steam always running), also tried to restart steam and my PC, even moving the folder in a system folder or in the steam library but nothing seems to work... Edit : Tried to reinstall Steam, still doesn't work...

Hope someone can help me out.

(I'm not really active on forums so if you wanna reach out to me, here's my discord : Serum#1980)

I run it from my steam library tbh I would try a reinstall though

when i try loading in chambers it don't work