Can't create a Project in Epics Launcher

Hi, when i try to create a project like the composure compositing framework and hit the button “create a project” a white site pops up and there is no ok or create button.

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Im on a macbook retina with macos sierra 10.12.5
and the launcher version is 6.2.0-3599880 and ue 4.17

what could be the issue?

thanks
rob