I'm assuming Qt Quick 1 support was intentionally removed from Qt Creator 3.5, but attempting to open design view for a QML file that imports QtQuick 1.1 results in the following error message:
"Cannot Start QML Emulation Layer (QML Puppet)"
"The executable of the QML emulation layer (QML Puppet) process cannot be stated or does not respond."
Note that the functionality works fine in Qt Creator 3.4. If support was intended to be removed, please add a user friendly error messaging stating this.