CMake: QC crashes when changing kit

Steps to reproduce:

• open an existing cmake project
• while configuring ensure you select only 1 kit; click 'Configure project..'
  • Edit view should open
    [unrelated to this issue, but: why isn't cmake triggered automatically?? (created QTCREATORBUG-15027 for this), I have to invoke the context menu on the project's node to execute cmake to let the project's file structure appear]
• switch back to Project view
• change the current kit to a different kit

Current result:

• QC crashes (see attached file for backtrace)