After the Qt 5.6 update the installer no longer starts on Windows due to missing Qt files.
It seems to start correctly after
QtWebEngineProcess.exe
is copied from the Qt bin to our installer bin and
icudtl.dat
is copied from the Qt resources to our installer bin/resources
To get rid of additional warnings copy the entire content of Qt resources to our installer bin/resources. To date that are the following files:
qtwebengine_resources.pak
qtwebengine_resources_100p.pak
qtwebengine_resources_200p.pak