Unity editor error on exit

Hi,

I had to install unity on a new computer and move my project there.
All works ok, but when I close the editor, I get the error :
“GetManagerFromContext: pointer to object of manager ‘MonoManager’ is NULL (table index 5)”.

I’ve just sent the bug report, but does anyone know a solution to this issue?
Perhaps I’ve done something to cause this? a missing file somehow?

Booga.

it appears this is a failure of the skin I’m using, but not a critical error.