It is known.  Part of the selection-changes being done.
The attached patch fixes it (nsselect.m changes by David De La Harpe Golden).

	Jan D.


Randal L. Schwartz skrev 2010-08-07 21.11:
>
> This is recently broken.  "pasteboard doesn't contain valid data"
> on any use of ^Y paste after any kind of cut or copy within Emacs.
>
> Pasting *does* seem to work if the text came from another application
> though, so it's more likely the copy/cut operation in emacs.
>
> I haven't had time to bisect yet, but hopefully this will ring a bell
> for someone to go investigate.
>