Fix Crafting Tree NPE (#1064)

src/main/java/codechicken/nei/bookmark/BookmarkStorage.java

@@ -198,6 +198,11 @@ public class BookmarkStorage {
                 final BookmarkItem item = BookmarkItem.of(parser.parse(itemStr).getAsJsonObject());
 
                 if (item != null) {
+
+                    if (!grid.groups.containsKey(item.groupId)) {
+                        item.groupId = BookmarkGrid.DEFAULT_GROUP_ID;
+                    }
+
                     grid.addItem(item, false);
                 } else {
                     wasError = true;

src/main/java/codechicken/nei/bookmark/tree/GuiCraftingTree.java

@@ -162,7 +162,7 @@ public class GuiCraftingTree extends GuiContainer implements INEIGuiHandler, IGu
         final ItemTreeSlot replaceNode = this.uiState.replaceRecipeNode;
         this.uiState.replaceRecipeNode = null;
 
-        if (recipe != null) {
+        if (recipe != null && this.grid.getGroup(this.groupId) != null) {
             final RecipeId recipeId = recipe.getRecipeId();
             boolean changed = false;