Not sure if I should start here or start new post. Same problem though. Qt Creator will not open. 4.11.2 is last version that will run. 4.14 through 5.03 won't open. Qt5.15.17 was compiled and seems ok. Windows 7 x64 with all updates and drivers. Dual Nvidia GTX1070's with cuurent drivers 3 dell monitors, also updated. DirectX 11_1 OpenGL 4.6 OpenGL ES 3.2 I have tried everything listed above, -noload all -load Core, even safe mode. I ran procom, but not sure what to look for. I found the following entries: FILE LOCKED WITH ONLY READER FAST IO DISALLOWED BUFFER OVERFLOW NAME NOT FOUND NO MORE FILES and NAME COLLISION. Avast is turned off. Defender is also. I also deleted Qt Projects folder...several times. Sounds like something SGaist may be able to help with.

Everyone who is trying to cross-compile Qt for Orange Pi 3B can follow this tutorial: https://github.com/vverenich/CrossCompileQtForOpi

In QT Design Studio, Tab Buttons are mostly for navigation within the UI, but each tab doesn’t automatically hide other content. Usually, a StackView or Loader is needed to switch visible content depending on the active tab.

@IamSumit can you reproduce the issue and share the Support Information logs. Please refer to the following Knowledge Base Article regarding how to obtain the Support Information is https://qatools.knowledgebase.qt.io/misc/collecting-support-info/collecting-support-information-linux-mac-windows/

I am looking for a teammate for this competition, an English-speaking person preferred living in Germany.

I think it's worth asking on the bug report system to see whether they are too specific.

Le [=] n'étant pas nécessaire ici vu qu'il n'y a rien à capturer dans la lambda. connect(obj1, &MyObject::mySignal , this, [](int arg1){ qDebug() << arg1; });

Hi, I think you can use https://forum.qt.io/category/5/qt-io-webservices category for this type of question (moved there by the way). Are these in your "unread" section ? Are they marked as you following them ?