Index: src/saveload/saveload.cpp
===================================================================
--- src/saveload/saveload.cpp	(revision 27142)
+++ src/saveload/saveload.cpp	(working copy)
@@ -2723,6 +2723,18 @@
 	} else {
 		/* Load chunks and resolve references */
 		SlLoadChunks();
+
+		if (IsSavegameVersionBefore(105)) {
+			/*
+			 * Before 105 there was no order for shared orders, thus it messed up horribly and
+			 * should be fixed before processing chunks
+			 */
+			Vehicle *v;
+			FOR_ALL_VEHICLES(v) {
+				v->InitShared();
+			}
+		}
+
 		SlFixPointers();
 	}
 
Index: src/vehicle_base.h
===================================================================
--- src/vehicle_base.h	(revision 27142)
+++ src/vehicle_base.h	(working copy)
@@ -611,8 +611,8 @@
 	inline Vehicle *PreviousShared() const { return this->previous_shared; }
 
 	/**
-	 * Get the first vehicle of this vehicle chain.
-	 * @return the first vehicle of the chain.
+	 * Get the first vehicle of the shared vehicle chain.
+	 * @return the first vehicle of the shared orders chain.
 	 */
 	inline Vehicle *FirstShared() const { return (this->orders.list == NULL) ? this->First() : this->orders.list->GetFirstSharedVehicle(); }
 
@@ -623,6 +623,11 @@
 	inline bool IsOrderListShared() const { return this->orders.list != NULL && this->orders.list->IsShared(); }
 
 	/**
+	 * Set next_shared and previous_shared to NULL (neccesary when loading older savegame)
+	 */
+	void InitShared() { this->next_shared=this->previous_shared=NULL; }
+
+	/**
 	 * Get the number of orders this vehicle has.
 	 * @return the number of orders this vehicle has.
 	 */