Open *pro file fails to load

When you open the *pro file with the Qt Plugin in Visual Studio, the vcproj file is generated. Exit Code is 0 and vcproj is created, but Visual Studio will not be able to load your project. Instead, a pop-up is coming with 'Illegales Zeichen im Pfad' -> German version, telling you: Illegal Character in path. Literaly no clue where it could fail. I checked with a very basic *pro file and a hello world. None of my projects open - with earlier plugin versions, it did.

When I open the vcproj file manually, everything compiles and runs just fine. But it is very uncool when you get the error message and have to open the vcproj file manually.

The project is on W:\myHelloWorld in a helloWorld.pro, so there is nothing fancy in a character anywhere.

Installation of Qt in C:\Qt64\qt5\qtbase

Project on W:\myHelloWorld in helloWorld.pro

Visual Studio 2019 Community Edition on

Windows 10 64bit