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Can't get a simple .exe file to run from Command Prompt , but instead getting System Error

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I’m see this problem with Qt 5.1.1 for Windows 32-bit (MinGW 4.8, OpenGL, 666 MB) (Info) What I’m seeing is a System Error window pop up with the following text “ The Program can’t start because Qt5Core.dll is missing from your computer. Try reinstalling the program to fix this problem”. Also the Command Prompt window appears, it just stays there until you press the Ok button on the System Error window and then both windows goes away. So I copied this .dll file into the folder containing the .exe file and I still get the same error. I even copied the .exe file to the .bin folder that contains all those .dll files ad I still get the same error. I did not see this with Qt 5.1.1 for Windows 32-bit (VS 2010, 505 MB) (Info), I had to get the above version as to compile a project. I happen to save the bin folder before uninstalling this version and went to a project’s folder for a simple QT Console Application that I figured out which .dlls were required to allow the *.exe to run from a Command Prompt. I re-ran it and there was no problem .. IT WORKED as before.

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