Is the scene you are importing into completely empty? For troubleshooting, I recommend you start a new instance of Blender, delete everything and try to import again. If that doesn't work, maybe the problem is in the SMD/QC files themselves. You can try to import the .smd files one by one to see which is the faulty one. Maybe even send us the contents of the QC.

I can import every single SMD file, but a common QC file I can't

Here is .QC
https://pastebin.com/1uM9DLFn

Why don't you just import the smd files one by one.

There's a corrupt character in your QC file. I don't see anything wrong with the uploaded text, but the website may have corrected the problem.

Oprindeligt skrevet af Momo:

Why don't you just import the smd files one by one.

If I'm loading file with flexes without qc then his shapes corrupting

But i can just not loading this file