diff server/cityhand.c server/cityhand.c
--- server/cityhand.c	Tue Jan  9 03:13:07 2001
+++ server/cityhand.c	Tue Jan  9 03:30:31 2001
@@ -42,6 +42,7 @@
 #include "plrhand.h"
 #include "sernet.h"
 #include "settlers.h"
+#include "spacerace.h"
 #include "srv_main.h"
 #include "unithand.h"
 #include "unittools.h"
@@ -404,6 +405,7 @@
   if (!is_wonder(id)) {
     pcity->improvements[id]=0;
     pplayer->economic.gold += improvement_value(id);
+    building_lost(pcity, id);
   }
 }
 
@@ -431,6 +433,21 @@
   city_refresh(pcity);
   send_city_info(0, pcity); /* If we sold the walls the other players should see it */
   send_player_info(pplayer, pplayer);
+}
+
+/**************************************************************************
+...
+**************************************************************************/
+void building_lost(struct city *pcity, int id)
+{
+  struct player *owner = city_owner(pcity);
+
+  pcity->improvements[id]=0;
+  if (id == B_PALACE &&
+      ((owner->spaceship.state == SSHIP_STARTED) ||
+       (owner->spaceship.state == SSHIP_LAUNCHED))) {
+    spaceship_lost(owner);
+  }
 }
 
 /**************************************************************************
diff server/cityhand.h server/cityhand.h
--- server/cityhand.h	Mon Jan  1 15:59:11 2001
+++ server/cityhand.h	Tue Jan  9 03:30:31 2001
@@ -30,6 +30,7 @@
 			    struct city *pcity, int x, int y);
 
 void do_sell_building(struct player *pplayer, struct city *pcity, int id);
+void building_lost(struct city *pcity, int id);
 
 void handle_city_change_specialist(struct player *pplayer, 
 				   struct packet_city_request *preq);
diff server/diplomats.c server/diplomats.c
--- server/diplomats.c	Tue Jan  9 01:44:33 2001
+++ server/diplomats.c	Tue Jan  9 03:35:43 2001
@@ -1024,8 +1024,6 @@
       }
     }
 
-    /* Do it. */
-    pcity->improvements[target] = 0;
     /* Report it. */
     notify_player_ex (pplayer, pcity->x, pcity->y, E_MY_DIPLOMAT,
 		      _("Game: Your %s destroyed the %s in %s."),
@@ -1037,6 +1035,9 @@
 		      get_improvement_name (target), pcity->name);
     freelog (LOG_DEBUG, "sabotage: sabotaged improvement: %d (%s)",
 	       target, get_improvement_name (target));
+
+   /* Do it. */
+   building_lost(pcity, target);
   }
 
   /* Update clients. */
diff server/spacerace.c server/spacerace.c
--- server/spacerace.c	Tue Dec 26 22:52:35 2000
+++ server/spacerace.c	Tue Jan  9 03:30:31 2001
@@ -156,6 +156,11 @@
   struct player_spaceship *ship = &pplayer->spaceship;
   int arrival;
 
+  if (!find_palace(pplayer)) {
+    notify_player(pplayer,
+                  _("Game: You need capital in order to launch spaceship."));
+    return;
+  }
   if (ship->state >= SSHIP_LAUNCHED) {
     notify_player(pplayer, _("Game: Your spaceship is already launched!"));
     return;
@@ -330,9 +335,8 @@
 void spaceship_lost(struct player *pplayer)
 {
   notify_player_ex(0, -1, -1, E_SPACESHIP,
-		_("Game: With the capture of %s's capital, the %s"
-		" spaceship is lost!"), pplayer->name,
-		get_nation_name(pplayer->nation));
+		   _("Game: Without guidance from capital, the %s "
+                     "spaceship is lost!"), get_nation_name(pplayer->nation));
   spaceship_init(&pplayer->spaceship);
   send_spaceship_info(pplayer, 0);
 }