[Whistler]

I have just found that the op4ctf flag owner problem isn't fixed correctly. actually there're quite a lot of places checking pent->v.owner and all of them need to check pent->v.origin as well:
(actually I think this is a bug of OP4. the "owner" field is just not nulled out when someone lost the flag and we have to use a "hack" like this to "fix" it)

   else if ((mod_id == GEARBOX_DLL) && (pent_info_ctfdetect != NULL))
   {
      pent = NULL;

      while ((pent = UTIL_FindEntityByClassname( pent, "item_ctfflag" )) != NULL)
      {
         // is this bot carrying the item? (after capture bug fix by Whistler)
         if ((pent->v.owner == pEdict) && (pent->v.origin == pEdict->v.origin))
         {
            // we are carrying the flag

            bot_has_flag = TRUE;

            break;  // break out of while loop
         }
         else if (FInViewCone( &pent->v.origin, pEdict ) &&
                  FVisible( pent->v.origin, pEdict))
         {
            // the bot can see it, check what type of model it is...

            skin = pent->v.skin;

            if (skin == 0) // Opposing Force team (these are BACKASSWARDS!)
               skin = 1;
            else if (skin == 1) // Black Mesa team
               skin = 0;

            // see if the flag matches the bot's team...
            if (skin == team)
            {
               // is and enemy carrying our flag/card?
               if (pent->v.owner != NULL)
               {
+                 if (pent->v.origin == pent->v.owner->v.origin)
+                 {
                     // kill the man with the flag/card!
                     pBot->pBotEnemy = pent->v.owner;

                     pBot->waypoint_goal = -1;  // forget the goal (if there is one)

                     return TRUE;
+                 }
               }
            }
            else  // flag/card is for another team!
            {
               // check if someone is NOT carrying the flag/card...
+              bool bIsCarrying = FALSE;
+              if (!FNullEnt(pent->v.owner))
+              {
+                 if (pent->v.origin == pent->v.owner->v.origin)
+                    bIsCarrying = TRUE;
+              }

-              if (pent->v.owner == NULL)
+              if (bIsCarrying)
               {
                  // find the nearest waypoint to the flag/card...
                  index = WaypointFindNearest(pent->v.origin, pEdict, 500, team);

                  if (index == -1)
                  {
                     // no waypoint is close enough, just head straight towards the flag/card
                     Vector v_flag = pent->v.origin - pEdict->v.origin;

                     Vector bot_angles = UTIL_VecToAngles( v_flag );

                     pEdict->v.ideal_yaw = bot_angles.y;

                     BotFixIdealYaw(pEdict);

                     return TRUE;
                  }
                  else
                  {
                     waypoint_distance = (waypoints[index].origin - pent->v.origin).Length();
                     distance = (pent->v.origin - pEdict->v.origin).Length();

                     // is the bot closer to the flag/card than the waypoint is?
                     if (distance < waypoint_distance)
                     {
                        // just head towards the flag/card
                        Vector v_flag = pent->v.origin - pEdict->v.origin;

                        Vector bot_angles = UTIL_VecToAngles( v_flag );

                        pEdict->v.ideal_yaw = bot_angles.y;

                        BotFixIdealYaw(pEdict);

                        return TRUE;
                     }
                     else
                     {
                        // head towards this waypoint
                        pBot->waypoint_goal = index;

                        // remember where the flag/card is located...
                        pBot->waypoint_near_flag = TRUE;
                        pBot->waypoint_flag_origin = pent->v.origin;
                     }
                  }
               }
            }
         }
      }
   }