I can't open old projects / cpp files.

[mirek_zaklosa]

Hello,

I'm trying to open old cpp files i QT Creator (the same QT Creator and the same computer as beafore) and i've got this:
2.jpg
all of my cpp files are crased

[Lesiok]

Can You open this files in any simple editor (Notepad, VIM) ?

[mirek_zaklosa]

Unfortunately - no:
1.png

[d_stranz]

Looks to me like your filesystem is corrupted. This isn't a Qt problem if you can't open the files in a text editor. If you are on Windows, try running a file system repair program and maybe you can recover some of it. (Make a backup first, right?)