Could not find the Qt platform plugin "windows"

[Deathcomes]

@hskoglund Theoretically no because i have another project (although with Qt5.2.1) which compiles and runs (from inside Qt) perfectly.
Should i try to test with a new project with 5.12.1?

[hskoglund]

Yes, try an example project with 5.12.1.

[Deathcomes]

@hskoglund Same thing happens with a new one.

[SGaist]

Do you have other versions of Qt installed on your system ? For example by other applications ?

[Deathcomes]

@SGaist Yes Qt 5.2.1 because i also maintain an older project.

These are my versions settings:

[SGaist]

I meant: check your system for other Qt version that may have been installed along any of your applications.

[Deathcomes]

@SGaist Ow! Sorry! How do i check that?

[Deathcomes]

@SGaist I searched but i didn't find any.

[Deathcomes]

Should i reinstall Qt 5.12.1 to possibly correct the problem?

[SGaist]

You can try that yes.

[Deathcomes]

@SGaist In what order should i install them in case the order is important? I repeat that i need Qt 5.2.1 and Qt 5.12.1.

[Deathcomes]

Reinstalling seems to have fixed the problem! Heck if i knew what was wrong! Can someone mark this issue as solved?

EDIT: Sorry! I found out how to mark my thread as solved! Thanks again for the help!