I'm unable to delete some layers. I cant find anything about this in online help (F1).
Here's the story: I wanted to start a new drawing in a new folder (for a new client) by opening an existing file, modifying it, and saving as the new drawing. I started by deleting everything from the old drawing. In the new drawing I wanted to delete some of the layers from the old drawing. When I tried to delete some of the layers I got an advice box with a [!] saying that the layer was not deleted, and that "the following layers cannot be deleted: layers 0 & defpoints; the current layer; xref-dependent layers; layers containing objects." The layer I tried to delete was not layer 0, the defpoints layer or the current layer. (At least so far as I know.) Which leaves xref dependent layers and layers containing objects. However, there was nothing in the drawing when I tried to modify the layers.
I'd like to be able to take an existing file and just modify it, including layers, to create the new drawing. Any tips/insights/advice?
Lee Hammack