Hello! One of my end users gets this error message when he tries to edit pages
in Contribute (cutting and pasting content in various ways):

While executing DMmenu_edit_paste command in CLmenus.xml, the following
JavaScript error(s) occurred: Type error: mm.event has no properties.

He rebooted his computer several time and tried copying and pasting in
different ways (ie. mouse, keyboard commands, and the edit menu). He also just
tried typing in text and gets a separate error message although it still allows
him to publish.

Can anyone shed some light on this problem? Thanks!