AutoCAD Civil 3D

[#1]

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mccabejoshua wrote:

I don't like leaving those errors in my drawing.  I have been in that cycle as well but it occurs rarely now since I purge>audit>purge>audit regularly.  If the "cycle" occurs I can trace the cause quickly and resolve it.

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How are you able to trace this?

[#2]

I audit and purge basically after I do anything.  If I get the bad layer I know it is a result of what I just did.

To clarify, I saw this a lot when I was building our template and assigning layers to label styles, point styles, etc.  When it occured I generally knew what needed to be fixed.

If I remember correctly I had corrupted blocks that had layers other than "0" in built into them but nothing on them.  For example, I would have a sewer manhole and when I tested the block it would have a few random layers in the block that I could not purge.  When I brought the block in, it would also bring in the random unused layers.  I could then purge them but the audit created the "bad layer".  I knew it was the blocks because that is what I was working on. 

[#3]

My first step would to audit>purge>audit a blank template drawing as suggested in a previous post.  When I do this to my template there are no errors and nothing to purge.

[#4]

Nothing to purge in your template?  Do you have no Blocks, Layers, Dim Styles, Text Styles set up for yourself in there?

[#5]

I have all these.

[#6]

I have checked all 12 template files and none returned any errors, but I am not able to purge theses files because there are a lots of styles, blocks, layers, etc. that need to be maintained in the file for the drafter. I have opened read-only copies of the files and audit/purged/audited the read-only files with no errors.

Does that mean that the errors are being created by the users?

[#7]

I'm not sure where the error is being created.  The good news is that your not starting with the errors.  Trying to recreate the error will be time consuming and a total pain but once its found you will also have to figure why its causing the bad layer and figure out how to fix it, if you can't work around it.

Are you purging unused layers at the end of the day after the audit?  If yes, I believe you may have a block, style, etc that calls for a layer that is no longer there, thus creating a bad layer condition.(or something similar)

I would like to know if Autodesk has list of conditions that will cause the "bad layer", I assume it would be rather large.  I assume this not specific to Civil 3D and can happen with any Autodesk product that allows you to audit your drawing.

I wish I could help more.  Please keep us updated if you find the cause/reason.

[#8]

This is just a shot in the dark; have you purged REGAPPS? It may be that something has come into your drawing from a foreign product. I've seen this type of behavior when working with DWG's exported from Microstation based products.

[#9]

Audit -> Purge -> Save -> Close -> Re-Open, and the audit bad layer will be gone

[#10]

One more note: save before you audit.  I've crashed and burned a few times on that.