--- a/newgrf.c	Sat Dec 30 23:04:14 2006 +0000
+++ b/newgrf.c	Sat Dec 30 23:09:27 2006 +0000
@@ -2966,13 +2966,10 @@
 		GRFConfig *file = GetGRFConfig(grfid);
 
 		/* Unset activation flag */
-		if (file != NULL) {
+		if (file != NULL && file != _cur_grfconfig) {
 			grfmsg(GMS_NOTICE, "GRFInhibit: Deactivating file ``%s''", file->filename);
 			SETBIT(file->flags, GCF_DISABLED);
 			CLRBIT(file->flags, GCF_ACTIVATED);
-
-			/* Skip processing if the GRF deactivated itself */
-			if (file == _cur_grfconfig) _skip_sprites = -1;
 		}
 	}
 }

--- a/newgrf_config.c	Sat Dec 30 23:04:14 2006 +0000
+++ b/newgrf_config.c	Sat Dec 30 23:09:27 2006 +0000
@@ -120,9 +120,9 @@
 	for (; src != NULL; src = src->next) {
 		c = calloc(1, sizeof(*c));
 		*c = *src;
-		c->filename = strdup(src->filename);
-		if (src->name != NULL) c->name = strdup(src->name);
-		if (src->info != NULL) c->info = strdup(src->info);
+		if (src->filename != NULL) c->filename = strdup(src->filename);
+		if (src->name     != NULL) c->name     = strdup(src->name);
+		if (src->info     != NULL) c->info     = strdup(src->info);
 
 		*dst = c;
 		dst = &c->next;
@@ -131,14 +131,63 @@
 	return dst;
 }
 
+/**
+ * Removes duplicates from lists of GRFConfigs. These duplicates
+ * are introduced when the _grfconfig_static GRFs are appended
+ * to the _grfconfig on a newgame or savegame. As the parameters
+ * of the static GRFs could be different that the parameters of
+ * the ones used non-statically. This can result in desyncs in
+ * multiplayers, so the duplicate static GRFs have to be removed.
+ *
+ * This function _assumes_ that all static GRFs are placed after
+ * the non-static GRFs.
+ *
+ * @param list the list to remove the duplicates from
+ */
+static void RemoveDuplicatesFromGRFConfigList(GRFConfig *list)
+{
+	GRFConfig *prev;
+	GRFConfig *cur;
+
+	if (list == NULL) return;
+
+	for (prev = list, cur = list->next; cur != NULL; prev = cur, cur = cur->next) {
+		if (cur->grfid != list->grfid) continue;
+		assert(HASBIT(cur->flags, GCF_STATIC));
+		prev->next = cur->next;
+		ClearGRFConfig(&cur);
+		cur = prev; // Just go back one so it continues as normal later on
+	}
+
+	RemoveDuplicatesFromGRFConfigList(list->next);
+}
+
+/**
+ * Appends the static GRFs to a list of GRFs
+ * @param dst the head of the list to add to
+ */
+void AppendStaticGRFConfigs(GRFConfig **dst)
+{
+	GRFConfig **tail = dst;
+	while (*tail != NULL) tail = &(*tail)->next;
+
+	CopyGRFConfigList(tail, _grfconfig_static);
+	RemoveDuplicatesFromGRFConfigList(*dst);
+}
+
 
 /* Reset the current GRF Config to either blank or newgame settings */
 void ResetGRFConfig(bool defaults)
 {
 	GRFConfig **c = &_grfconfig;
 
-	if (defaults) c = CopyGRFConfigList(c, _grfconfig_newgame);
-	CopyGRFConfigList(c, _grfconfig_static);
+	if (defaults) {
+		c = CopyGRFConfigList(c, _grfconfig_newgame);
+	} else {
+		ClearGRFConfigList(c);
+	}
+
+	AppendStaticGRFConfigs(&_grfconfig);
 }
 
 
@@ -400,6 +449,7 @@
 
 	ClearGRFConfigList(&_grfconfig);
 	_grfconfig = first;
+	AppendStaticGRFConfigs(&_grfconfig);
 }
 
 const ChunkHandler _newgrf_chunk_handlers[] = {

--- a/newgrf_config.h	Sat Dec 30 23:04:14 2006 +0000
+++ b/newgrf_config.h	Sat Dec 30 23:09:27 2006 +0000
@@ -44,6 +44,7 @@
 const GRFConfig *FindGRFConfig(uint32 grfid, uint8 *md5sum);
 GRFConfig *GetGRFConfig(uint32 grfid);
 GRFConfig **CopyGRFConfigList(GRFConfig **dst, const GRFConfig *src);
+void AppendStaticGRFConfigs(GRFConfig **dst);
 void ClearGRFConfig(GRFConfig **config);
 void ClearGRFConfigList(GRFConfig **config);
 void ResetGRFConfig(bool defaults);

--- a/newgrf_gui.c	Sat Dec 30 23:04:14 2006 +0000
+++ b/newgrf_gui.c	Sat Dec 30 23:09:27 2006 +0000
@@ -200,17 +200,17 @@
 {  WWT_SCROLLBAR,     RESIZE_LRB, 14, 295, 306,  14, 221, 0x0,                     STR_NULL },
 
 /* NewGRF file info */
-{      WWT_PANEL,     RESIZE_RTB, 14,   0, 306, 222, 311, 0x0,                     STR_NULL },
+{      WWT_PANEL,     RESIZE_RTB, 14,   0, 306, 222, 324, 0x0,                     STR_NULL },
 
-{ WWT_PUSHTXTBTN,     RESIZE_RTB, 14,   0, 146, 312, 323, STR_NEWGRF_ADD_FILE,     STR_NEWGRF_ADD_FILE_TIP },
-{ WWT_PUSHTXTBTN,    RESIZE_LRTB, 14, 147, 294, 312, 323, STR_NEWGRF_RESCAN_FILES, STR_NEWGRF_RESCAN_FILES_TIP },
-{  WWT_RESIZEBOX,    RESIZE_LRTB, 14, 295, 306, 312, 323, 0x0,                     STR_RESIZE_BUTTON },
+{ WWT_PUSHTXTBTN,     RESIZE_RTB, 14,   0, 146, 325, 336, STR_NEWGRF_ADD_FILE,     STR_NEWGRF_ADD_FILE_TIP },
+{ WWT_PUSHTXTBTN,    RESIZE_LRTB, 14, 147, 294, 325, 336, STR_NEWGRF_RESCAN_FILES, STR_NEWGRF_RESCAN_FILES_TIP },
+{  WWT_RESIZEBOX,    RESIZE_LRTB, 14, 295, 306, 325, 336, 0x0,                     STR_RESIZE_BUTTON },
 {   WIDGETS_END },
 };
 
 
 static const WindowDesc _newgrf_add_dlg_desc = {
-	WDP_CENTER, WDP_CENTER, 307, 324,
+	WDP_CENTER, WDP_CENTER, 307, 337,
 	WC_SAVELOAD, 0,
 	WDF_STD_TOOLTIPS | WDF_DEF_WIDGET | WDF_STD_BTN | WDF_UNCLICK_BUTTONS | WDF_RESIZABLE,
 	_newgrf_add_dlg_widgets,
@@ -485,20 +485,20 @@
 {  WWT_SCROLLBAR,   RESIZE_LRB, 10, 288, 299,  30,  99, 0x0,                         STR_0190_SCROLL_BAR_SCROLLS_LIST },
 
 /* NewGRF file info */
-{      WWT_PANEL,   RESIZE_RTB, 10,   0, 299, 100, 199, STR_NULL,                    STR_NULL },
+{      WWT_PANEL,   RESIZE_RTB, 10,   0, 299, 100, 212, STR_NULL,                    STR_NULL },
 
 /* Edit parameter and apply changes button... */
-{ WWT_PUSHTXTBTN,    RESIZE_TB, 10,   0, 143, 200, 211, STR_NEWGRF_SET_PARAMETERS,   STR_NULL },
-{ WWT_PUSHTXTBTN,   RESIZE_RTB, 10, 144, 287, 200, 211, STR_NEWGRF_APPLY_CHANGES,    STR_NULL },
+{ WWT_PUSHTXTBTN,    RESIZE_TB, 10,   0, 143, 213, 224, STR_NEWGRF_SET_PARAMETERS,   STR_NULL },
+{ WWT_PUSHTXTBTN,   RESIZE_RTB, 10, 144, 287, 213, 224, STR_NEWGRF_APPLY_CHANGES,    STR_NULL },
 
-{  WWT_RESIZEBOX,  RESIZE_LRTB, 10, 288, 299, 200, 211, 0x0,                         STR_RESIZE_BUTTON },
+{  WWT_RESIZEBOX,  RESIZE_LRTB, 10, 288, 299, 213, 224, 0x0,                         STR_RESIZE_BUTTON },
 
 { WIDGETS_END },
 };
 
 
 static const WindowDesc _newgrf_desc = {
-	WDP_CENTER, WDP_CENTER, 300, 212,
+	WDP_CENTER, WDP_CENTER, 300, 225,
 	WC_GAME_OPTIONS, 0,
 	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS | WDF_RESIZABLE,
 	_newgrf_widgets,