I am having trouble (consistently) editing and saving edits to spatial features. When I try to check in features i get a "feature modifications have not been saved" and when i try to refresh a layer i get "Cannot refresh layer. Drawing has checked out features." But when i try to check in features i again get "Feature modifications have not been saved. Failed to save edit set." and the cycle continues. what am i doing wrong? I also have spatial features that mysteriously do not appear sometimes and some that are missing somewhere forever. The only thing that helps somewhat is to disconnect and shut down AutoCAD completely and then fire it back up. It has taken me ten times as long to put in new features as it did with non spatial entities. Any help would be greatly appreciated.