No item exists at http://xxxx/Common/Forms/EditForm.aspx It may have been deleted or renamed by another user

Question

When I am trying to apply an item level permissions for a uploaded document in my document library am getting the error:

No item exists at http://xxxx/Common/Forms/EditForm.aspx?Mode=Upload&CheckInComment=&ID=170&RootFolder=/Common/KnowledgeDocuments&IsDlg=1. It may have been deleted or renamed by another user

am able to upload the document but am getting this ugly yellow error!

No item exists at http://xxxx/Common/Forms/EditForm.aspx It may have been deleted or renamed by another user

        List<String> objlistofGroupNames = new List<string>();

        SPListItemCollection pconfigILPItemCollection = null;
        try
        {
            SPSecurity.RunWithElevatedPrivileges(delegate()
            {
                SPSite CurrentSite = new SPSite(paramProperties.SiteId);
                SPWeb CurrentWeb = 
      CurrentSite.OpenWeb(paramProperties.RelativeWebUrl);
                CurrentWeb.AllowUnsafeUpdates = true;
                SPList configCurrentList = 
  CurrentWeb.Lists.TryGetList(NPDListNames.ITEMLEVELPERMISSIONSLIST);

                SPQuery objquery = new SPQuery();

                foreach (SPListItem singleItemConfigList in 
          configCurrentList.Items)
                      {
                      if (singleItemConfigList != null && 
              singleItemConfigList.ListItems.Count > 0)
                      {
                        string strEntityConfigList = 
              singleItemConfigList["Entity"].ToString();  //Common|Others

      if (!pCurrentListItem.HasUniqueRoleAssignments)
                                        {
                 pCurrentListItem.BreakRoleInheritance(false);
                        CurrentWeb.AllowUnsafeUpdates = true;
          SPRoleAssignmentCollection SPRoleAssColn = 
                  pCurrentListItem.RoleAssignments;
                                            for (int i = SPRoleAssColn.Count 
                              - 1; i >= 0; i--)
            SPRoleAssignment roleAssignmentSingle = SPRoleAssColn[i];
           System.Type t = roleAssignmentSingle.Member.GetType();
                                                //    continue;
                                                //if (roleAssignmentSingle.Member.LoginName == properties.UserLoginName)
                                                //   continue; 
                  SHAREPOINT\\system
                                               //if 
          (roleAssignmentSingle.Member.LoginName != "SHAREPOINT\\system" ||  
         roleAssignmentSingle.Member.ID != npdadminSPGroup.ID || 
        roleAssignmentSingle.Member.LoginName != 
              paramProperties.UserLoginName)
                                              if 
              (roleAssignmentSingle.Member.Name != "System Account" && 
              roleAssignmentSingle.Member.LoginName != 
                          paramProperties.UserLoginName)
                  {
                   if (t.Name == "SPGroup" || t.Name == "SPUser")
                         sPRoleAssColn.Remove(i);                                                    
                     }                        
 }

                          try
                          {
                           if 
          (!singlestrReadILPGroupName.ToLower().Contains("creator") && 
              !string.IsNullOrEmpty(singlestrReadILPGroupName))  //non-
           //author  /sp group permissions
                {
             SPGroup singleSPGroup = 
              pCurrentWeb.SiteGroups[singlestrReadILPGroupName];
       SPRoleAssignment mroleAssignmentEditNoDelILP = new 
       SPRoleAssignment(singleSPGroup);
      SPRoleDefinition mroleDefinitionEditNoDelILP = 
           pCurrentWeb.RoleDefinitions["NPD ReadILP"];

        mroleAssignmentEditNoDelILP.RoleDefinitionBindings.Add(
         mroleDefinitionEditNoDelILP);
       pCurrentListItem.RoleAssignments.Add
          (mroleAssignmentEditNoDelILP);
   singlestrReadILPGroupName.ToLower().Contains("creator") && 
       !string.IsNullOrEmpty(singlestrReadILPGroupName)) ///author 
        //permissions <p>
        at last am doing  <p>
             pCurrentListItem.SystemUpdate(false);  

Please understand that, my document library's versioning settings are set to Create Major Versions [ NOT MINOR VERSIONS] and Require document to be checked out is set to NO

Answer 1

Try to debug your event receiver and you will note that this error raised from the itemAdded event, because the metadata is not available in the ItemAddedevent and this cause

No item exists. It may have been deleted or renamed by another user

So Make sure that you have added your code (set document permission) only at ItemUpdated or ItemUpdating to can catch the document properties, then set its permission!