acdb problems, need fix, corrupt linetypes with error codes

[bhull1985403354]

Our custom linetypes are causing these errors to occur in drawings that were created in civil3d. does anyone know how to delete these linetype references from the database so that we will not need to audit drawings upon opening? Thank you very much....Reading handle A0F object type AcDbLinetypeTableRecord
Error 13 (eUnknownHandle) Object discarded
Reading handle A12 object type AcDbLinetypeTableRecord
Error 13 (eUnknownHandle) Object discarded
Reading handle A13 object type AcDbLinetypeTableRecord
Error 13 (eUnknownHandle) Object discarded
Reading handle A16 object type AcDbLinetypeTableRecord
Error 13 (eUnknownHandle) Object discarded
Reading handle A17 object type AcDbLinetypeTableRecord
Error 13 (eUnknownHandle) Object discarded

[BlackBox]

I fell like I've seen this more than once... Is this a duplicate thread?

Please post a sample drawing in 2010 or older format.

[Tom Beauford]

With Civil 3D open purge will not remove linetypes referenced in styles, but you can Delete them. Any time you feel you have more layers, linetypes, etc... than you want in a drawing or template use purge and select the ones you don't think you need.