Qt 15.5.2 download

Perdrix

While working to port the open source project DeepSkyStacker to Qt from MFC I've been using 5.15.2. The other contributors to the project haven't been doing very much with Qt in the early stages of the work, but now we need to get all of us using the same version of Qt (free version of 5.15.2 ideally)

Trouble is, where can they download it from? The automatic installer is only offering 6.4 and we don't want to switch to that until we've completed our port to 5.15.2 (or a later version of 5.15)

Can you assist with this please?

Chris Kawa

The easiest would be through the Online installer.

Perdrix

Downloaded that and it complained that:

C:\Qt already exists and contains an installation

Well of course it does ...

Chris Kawa

@Perdrix Well yeah, if you already have it it won't start that way. You can go to your installed apps list and find Qt there and click Modify if you want. The installer download is for the others that don't have Qt installed yet.

Perdrix

I tried that too but it only offered me 6.4

Chris Kawa

Where did you get Qt from? Maybe you've got the offline installation of Qt 6.4. That wouldn't contain other versions.
In that case you can uninstall your existing Qt and then use the online installer. It contains all the publicly available releases of Qt 5.x and 6.x.

Christian Ehrlicher

Please show your Qt installer screen where you can select the Qt versions and modules

Perdrix

It was an online install of 5.15.0 to start with, then updated to 5.15.2

I'll report to the other developers and see (I can't see what they as I already HAVE 5.15.2)

D.

mtoeltsch

Hi,
I opend the Maintenance Tool and added QT 5.15.2 to the existing 5.15.0. When I tried to add the new version (5.15.2) to Visual Studio, it complained "Error: Qt license file was not found!". The same error appears when running qmake.exe.
It meant to be an open source license, at least it always was so far.
Any ideas? Thanks.

Perdrix

Martin is one of the DeepSkyStacker team so his post is strictly related.

JKSH

@mtoeltsch said in Qt 15.5.2 download:

I opend the Maintenance Tool and added QT 5.15.2 to the existing 5.15.0.

Did you get any error messages, or messages about licenses, during the installation of Qt 5.15.2?

Also, if you open Qt Creator, are you able to build a basic "Hello World" program?

When I tried to add the new version (5.15.2) to Visual Studio, it complained "Error: Qt license file was not found!". The same error appears when running qmake.exe.

Did you change Windows account between installing Qt 5.15.2 and running Visual Studio?

mtoeltsch

No error messages during installation of 5.15.2.
Never made a QT program before, so I'm not familiar with QT Creator. I'll try it later.
I did not change the Windows account, in fact I ran Visual Studio immediately after installation of QT.

Wouldn't it be best to completely uninstall QT (every version) and then make a fresh installation of 5.15.2?

J.Hilk

@Perdrix said in Qt 15.5.2 download:

Trouble is, where can they download it from? The automatic installer is only offering 6.4 and we don't want to switch to that until we've completed our port to 5.15.2 (or a later version of 5.15)

did you check ~~LTS~~ Archive ?

since a couple of updates ago, Qt5 is no longer in the latest supported releases. Their "subtle" way to push developers to use Qt6.

Perdrix

The online installer definitely offered me 5.15.2

D.

Perdrix

Still unsolved (though it may be moot as I made changes for 6.4.0 earlier today.

J.Hilk

@Perdrix again, did you check the checkbox "Archive" and pressed the "Filter" button?

My online installer then shows me all Qt Versions, including 5.15.2 to download.

Perdrix

It's Martin's problem with lack of a license that's not solved

kkoehne

"Error: Qt license file was not found!". The same error appears when running qmake.exe.

This means you have installed the commercial packages, but don't have a valid license currently.

Switching between commercial and open source installations is not that straightforward. You need to completely uninstall Qt on the machine, and then start fresh.

In the installer, please check if it says 'Welcome to Qt commercial setup.", or "Welcome to Qt open source setup" right after giving your Qt Account credentials.

mtoeltsch

This is a screenshot of the Qt maintenance tool. It says "Open Source License".
Even though it obviously installed a commercial version of 5.15.2.

jsulm

@mtoeltsch It could be that your commercial license has expired, so the installer only shows open source options.