Failed to parse data of drag'n'drop event.

[Fritsl]

Clean fresh install, default everything, right click in Assets, add Script -> Drag'n drop script onto cubes "Script -> Drag'ndrop script here" -> Nothing happens, but Console writes "Failed to parse data of drag'n'drop event.".

Am not able to attach scripts in any way, nor by writing path - there's no error messages, field just keeps saying "none" even after editing.