QML does extra checks on Windows to make sure any path passed in is correctly capitalized. The installer does not yet take this into account, and e.g. installs the application happily to C:\qt\... even if there's a C:\Qt\... on the file system.
This has side effects for the installer:
- Qt Creator will be launched with wrong directory, and e.g. the welcome screen stays blank
- the binary QtQuick1/QtQuick examples get the 'wrong' path patched in, and do not launch any more
Easiest fix (apart from removing this stupid QtDeclarative/QtQml file case check) is to let the installer 'normalize' the path it uses right in the beginning. Qt Creator has following code to normalize paths: