exited with code -1073741511

[schnitzel]

Before you try to reinstall....
why don't you try to comment most of your code out especially whatever is in the constructor.
I would still suggest to use debug print otherwise you are depending on gui init.
Also, I have no idea on what other libraries your app depends on.

good luck

[john_god]

I just use opengl besides the basic gui dll's like qtcore.dll,... I created a empty project wich has the same problem so its not the code I think. Thanks for all the help schnitzel. I will reinstall qt but I'm work overloaded right now wich is preventing me from spending proper time to solve this issue

[Zero_G]

John_God, I'm having exactly the same issue... I just installed the new 4.6 version and I cannot run any example from the Qt Demo window, nor from the Qt Creator in Release mode!
I checked out the PATH environment variable, but it already contains "C:\Qt\2010.02.1\qt\bin", I'm looking for other references to wrong Qt DLLs...

[john_god]

I solved this issue check this thread . Let me know if this helped

[Zero_G]

WOW, it worked, it was exactly that problem!! Now I can compile and run in Release mode and launch examples from Qt Demo interface.
Man, I owe you a beer...

However, it's really strange that a so easily reproducible issue it is so scarcely documented in the Qt help... your fix should go into the FAQ section!

[john_god]

Glad it helped.

However, it's really strange that a so easily reproducible issue it is so scarcely documented in the Qt help..

In my opinion this more of a windows issue.
In early releases of my program Math Graphica (see my signature) I made the "mistake" of deploying
Qt dll's to windows system dir. No more of that, now I deploy in program file program directory.
No wonder they call it dll hell...

[Chandra]

I encountered the error -1073741511 after reinstalled Qt4 and Visual Studio 2010. Before reinstalling this error had never come up, and even after reinstalled the compiled program itself worked fine if it had QtCore4.dll and QtGui4.dll in the same folder with the compiled program.

After struggling, I solved this problem.

Qt remembers old settings. I just renamed the folder which contains the settings. Then Qt created new settings and now works fine.

The name of the folder is
C:\users\<USERNAME>\AppData\Roaming\Nokia for Vista
C:\Documents and Settings\<USERNAME>\Application Data\Nokia for XP

Just rename or delete this folder.

[n0_0ne]

I now got the same problem... this stupid Error -1073741511, which doesn't help finding the problem at all.

I was able to compile my programs with Qt Creator a few months ago, now I'm not even able to compile a tiny test program with an empty mainwindow, created by Qt Creator itself.

I have no idea what to do anymore, since I did everything which solved the problem for other users here. I deleted all the Qt-dlls in the windows/system directory, checked the environment-path for the right order and forced Qt Creator to renew its settings. Nothing helps...

The exact error message:
D:/Entwicklung/Qt/mingw/bin/mingw32-make -f Makefile.Debug
mingw32-make[1]: Entering directory `D:/My Dropbox/Projects/QtCreator/test-build-desktop'
d:/Entwicklung/Qt/qt/bin/uic.exe ../test/mainwindow.ui -o ui_mainwindow.h
mingw32-make[1]: Leaving directory `D:/My Dropbox/Projects/QtCreator/test-build-desktop'
mingw32-make: Leaving directory `D:/My Dropbox/Projects/QtCreator/test-build-desktop'
mingw32-make[1]: *** [ui_mainwindow.h] Error -1073741511
mingw32-make: *** [debug] Error 2

It looks like the compiling step of the .ui file isn't working, since there is no ui_mainwindow.h after the error occured.

Does anyone know, where the problem could be?

[squidge]

From your error code, I would say that UIC isn't finding the correct version of Qt on the system, or some other DLL that it depends on. It *IS* finding a DLL, but not the one its expecting (eg. It may be finding a DLL compiled using GCC rather than Visual Studio, for example).

Check your PATH environment variable, and any variables starting with QT, such as QTDIR.

Delete any old object code or setting files.

The actual error message is "ENTRYPOINT_NOT_FOUND".

[n0_0ne]

I'm using gcc instead of VS. I'm not sure, which type of dlls the official SDK ships, since I already compiled some of my programs using Qt and gcc on this machine. So it should be the right ones.

I checked my PATH and other variables, I've only got one SDK of Qt installed, and everything is pointing to it. There shouldn't be any other dlls anymore. As I already said: It worked a few months ago.

Does anyone know, how to find out, which compiler was used to build a dll?

EDIT: ok, I searched for QtCore4.dll and actually it existed a few times on the system. Unfortunately MatLab, CodeAnalyst (by AMD) and MiKTeX all delivered their own dll files and they wrote themselves into the system PATH.

Perhaps the system PATH variable is being searched before the user PATH variable. I now copied all the directories from my user to the system variable and in front of all the other directories. *Now* everything should be correct, but it still isn't working :/

[n0_0ne]

BTW, what exactly is the build environment in Qt Creator, I can change the PATH variable for example. Is this some kind of local settings, one can have for different projects?

I just tested the uic.exe directly from the command line, and it worked?!

I really don't know, why it isn't working in Qt Creator... what does Qt Creator do different?

[squidge]

When you install Qt, you are installing two different version of the Qt DLLs. QtCreator and friends requires one version, whilst applications you build use another version.

CD to the directory of UIC and run it from there to see if it works.