Fixed #585 and #588.

client/CCastleInterface.cpp

@@ -603,7 +603,11 @@ void CCastleInterface::buildingClicked(int building)
 	/*Tower*/	case 2://Artifact Merchant
 	/*Dungeon*/	case 5://Artifact Merchant
 	/*Conflux*/	case 8://Artifact Merchant
-					GH.pushInt(new CMarketplaceWindow(town, town->visitingHero, RESOURCE_ARTIFACT));
+					if(town->visitingHero)
+						GH.pushInt(new CMarketplaceWindow(town, town->visitingHero, RESOURCE_ARTIFACT));
+					else
+						LOCPLINT->showInfoDialog(boost::str(boost::format(CGI->generaltexth->allTexts[273]) % b->Name())); //Only visiting heroes may use the %s.
+
 					break;
 				default:
 					defaultBuildingClicked(building);

client/CPlayerInterface.cpp

@@ -1084,7 +1084,6 @@ bool CPlayerInterface::moveHero( const CGHeroInstance *h, CGPath path )
 			bool guarded = CGI->mh->map->isInTheMap(cb->guardingCreaturePosition(endpos - int3(1, 0, 0)));
 
 			cb->moveHero(h,endpos);
-			curTile = cb->getTileInfo(endpos);
 
 			eventsM.unlock();
 			while(stillMoveHero.data != STOP_MOVE  &&  stillMoveHero.data != CONTINUE_MOVE)