Hello,

in excel 2000 sp3, i found a bug using conditional formatting.
Let's say i have two cells A1 and A2.
I want to set A2 backcolor according to A1 backcolor.
If i set conditional formatting on A2 cell, using =iscouleur("A1")
as the condition for the formatting.
Iscouleur is a custom VBA function defined as:

public function iscouleur(r as range) as boolean
    iscouleur=(r.interior.color>0)
end function

It works OK, but if I want to set manually the backcolor of A2, although
there is already a conditional formatting on the backcolor, then it
crash with "Memory cannot be read" or a "Floating calculation error".

Any idea if this is a known bug and if there is a workaround?

Thanks,
Lionel.