I'm getting this message when copying two cells to an area 36x2 cells in MS
Excel 2007, in a workbook of about 5 Mb.

I can work round by (say) copying 1x2 into 4x2, then 4x2 into 36x2 - but
this should not be happening! It's not the first time I've had this, but it's
not a problem I always have.