You cannot delete a layer until all objects in that layer are deleted.  If you
still get this message after deleting all objects visible when only that layer
is turned on, it may be because an object within a block in another layer was
in that layer before the block was defined - That can be rather confusing

>>> [email protected] 12/14/01 09:20AM >>>
Dear colleagues,

I am currently designing a mask set in AutoCAD R14, and have encountered
some difficulties. There are a number of redundant layers that I now need to
delete. However, when I attempt to delete these redundant layers the
following message is displayed in AutoCAD:

"The following layers cannot be deleted:
{1} Layer 0 and Defpoint layers.
{2} The current layer.
{3} X-ref dependent layers
{4} Layers containing objects."

This message does not solve the problem, as:
{1} The layers that I need to delete are separate from the defpoint or 0
layers, (statement {1} may be discounted.)
{2} The redundant layers cannot be deleted whether or not they are selected
as current, (statement {2} may be discounted.)
{3} There are no x-refs in the anywhere in the file [active or redundant
layer], (statement {3} may be discounted)
{4} There are no objects present in the redundant layers, (statement {4} may
be discounted.)

 I am at a loss as to understand the nature of this problem. I am writing to
see if there is anyone in our research community with experience of AutoCAD
who might recognise this problem and can perhaps offer a solution?


Many Thanks


Richard Haigh
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