Hello, I have installed ArcGIS Qt SDK 10.2 Finall, VS2012 U3 Express, Qt 5.1.1 with Creator. On my development computer the application works as expected.
If I moved it to another Win 74 64bit computer, I ended up with error message
This application failed to start because it could not find or load the Qt platform plugin "windows".
Reinstalling the application may fix this problem.
I moved all the libraries to the program directory, and qwindows.dll to platform folder besides the exe file. Please check the attachments.