Fixed: Exception on removing item

src/com/jpexs/decompiler/flash/gui/tagtree/TagTreeContextMenu.java

@@ -1455,6 +1455,7 @@ public class TagTreeContextMenu extends JPopupMenu {
             }
 
             if (View.showConfirmDialog(this, confirmationMessage, mainPanel.translate("message.confirm"), JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE) == JOptionPane.YES_OPTION) {
+                tagTree.clearSelection();
                 Map<SWF, List<Tag>> tagsToRemoveBySwf = new HashMap<>();
                 Set<SWF> swfsToClearCache = new HashSet<>();
 
@@ -1562,7 +1563,7 @@ public class TagTreeContextMenu extends JPopupMenu {
                 for (SWF swf : swfsToClearCache) {
                     swf.clearAllCache();
                 }
-
+                    
                 mainPanel.refreshTree();
             }
         }