Hello,

We have a problem with some property types.  In our Member types section, we have added several properties to some of the Member types.  When I click to delete any of those properties, I get the error below.  I am guessing we have some corrupt data in our database, but I am not sure where to begin for isolating the problem.  Anyone have any suggestions or ideas?  Thanks.

[NullReferenceException: Object reference not set to an instance of an object.]
   umbraco.cms.businesslogic.propertytype.PropertyType.delete() in d:\TeamCity\buildAgent\work\7380c184e9fcd3ea\umbraco\cms\businesslogic\propertytype\propertytype.cs:291
   umbraco.controls.ContentTypeControlNew.gpw_Delete(Object sender, EventArgs e) in d:\TeamCity\buildAgent\work\7380c184e9fcd3ea\umbraco\presentation\umbraco\controls\ContentTypeControlNew.ascx.cs:379
   umbraco.controls.GenericProperties.GenericPropertyWrapper.GenericPropertyWrapper_Delete(Object sender, EventArgs e) in d:\TeamCity\buildAgent\work\7380c184e9fcd3ea\umbraco\presentation\umbraco\controls\GenericProperties\GenericPropertyWrapper.cs:85
   System.EventHandler.Invoke(Object sender, EventArgs e) +0
   umbraco.controls.GenericProperties.GenericProperty.DeleteButton2_Click(Object sender, ImageClickEventArgs e) in d:\TeamCity\buildAgent\work\7380c184e9fcd3ea\umbraco\presentation\umbraco\controls\GenericProperties\GenericProperty.ascx.cs:246
   System.Web.UI.WebControls.ImageButton.OnClick(ImageClickEventArgs e) +108
   System.Web.UI.WebControls.ImageButton.RaisePostBackEvent(String eventArgument) +118
   System.Web.UI.WebControls.ImageButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1565